Native external sender callouts on email in Outlook

Published Apr 02 2021 06:20 AM 37.1K Views

Overview

We know that some of our customers leverage Exchange transport rules to prepend subject line or insert the message body to show the email is from external senders. This approach has a few limitations which we heard:

  • You can end up with duplicate [External] tags in subject line if external users keep replying to the thread (some of our customers use customized solutions to remove the duplicates).
  • Adding things to subject line breaks Outlook conversation threading, as the subject line is modified, so messages no longer “belong” to the same conversation.
  • Changed subject (or message body) stays as a part of the message during reply or forward, which leads to confusion if the thread becomes internal.
  • There can be localization issues, as transport rules have no knowledge of client language that end-users are using.
  • Those additions might take a lot of space in the subject line, making it hard to preview the subject on smaller devices.

We have heard the feedback on this, and are working on providing a native experience to identify emails from senders outside your organizations (which can help protect against spam & phishing threats). This is achieved by presenting a new tag on emails called “External” (the string is localized based on your client language setting) and exposing related user interface at the top of your message reading view to see and verify the real sender's email address.

To set this up

  1. Exchange Online tenant admin will need to run the cmdlet Set-ExternalInOutlook to enable the new user interface for the whole tenant (this is available now); adding certain emails and domains to the allow list via the cmdlet is also possible.
  2. Outlook on the web already supports this. Outlook Mobile (iOS & Android) and Outlook for Mac are rolling out this feature. Specific versions:
    • Outlook on the web: available now
    • Outlook for Windows: available in May 2021 (starting with Insider Fast)
    • Outlook mobile (iOS & Android): version 4.2111.0 and higher
    • Outlook for Mac: version 16.47 and higher

If you are using the prepend subject line transport rules currently to add an [EXTERNAL] tag in external email subject line: the new Outlook native callouts are adding a new MAPI property called IsExternalSender to the email item. Once all the (above listed) client versions you require have this functionality, to avoid emails being marked ‘External’ twice (once by new native functionality and once by the transport rule), please turn off the transport rule first before turning on Outlook native external sender callouts.

We are tracking this feature in Microsoft 365 Roadmap ID 70595. This feature can be enabled on the tenant level now.

Outlook on the web, Mac, and mobile will display an External tag in the message list. Outlook Desktop and OWA will show the sender's email address at reading pane info bar. Outlook mobile and Outlook for Mac will only see an external tag on the message reading pane, and users will need to click the tag to see the real sender’s email address.

Outlook on the web view of External sender:

NativeOLExternal01.jpg

In Outlook for iOS, External sender user interface in the message list, External tag when reading chosen email and view of sender's email address after tapping External label:

NativeOLExternal02.jpg

Once this feature is enabled via PowerShell, it might take 24-48 hours for your users to start seeing the External sender tag in email messages received from external sources (outside of your organization), providing their Outlook version supports it.

If enabling this, you might want to notify your users about the new feature and update your training and documentation, as appropriate.

Let us know here if you have any feedback!

The Outlook Team

62 Comments
Senior Member

This is not meant to tag subject or body of the email, it adds it's own little table.

 

This is good because if you add the word "externa" to the subject or body you can't search or sort properly.

 

You can only see these on the Outlook clients either windows or mobile.

 

 

Super Contributor

@ians-uleth

 

>Users that use both Outlook and third-party clients would see the fallback tag in Outlook

Well, for such users we have developed a tiny flow that suppress the native tagging: https://www.ivasoft.com/disabletaggingflow.shtml

 

 

Occasional Visitor

We enabled it about 24 hours ago. It now works on mobile clients. It does not work on the desktop clients. We are running version 16.0.13901.20516. The monthly enterprise channel. When will it work in the desktop client? What version do we need? I tried looking at the changelog for Office, but couldn't find any mention of this in any of the latest versions?

 

https://docs.microsoft.com/en-us/officeupdates/current-channel

Occasional Visitor

I have never set up external tagging also get-externalinoutlook gives Enabled: false. Despite some of the external emails tagged as External some not in Outlook for Windows.

Any idea?

Occasional Visitor

@peterkarpati must be configured as a transportrule

Occasional Visitor

@Casper Frank-Stender Nope. Mail Flow rules is empty

Occasional Contributor

@Casper Frank-Stender 

Works here with Outlook Version 2005 (Build 14021.20000) (Beta Channel)

New Contributor

@Andres Bohren I think you showed a screenshot of the warning that is provided when you forward or reply to an email that includes an external recipient. The thread is regarding the 'Warning' that is inserted before the subject line when an email is RECEIVED from an external sender. 

 

This is not available in Outlook for PC yet. It is enabled on a per tenant basis and currently applies to Outlook on the Web, Outlook Mac, IOS & Android only.

Contributor

After a couple of months of availability, where do we stand on creating exceptions by IP range and increasing the max entries beyond 30? With all of the Microsoft sending addresses I suspect some customers may be beyond 30 for M365 alone!

Senior Member

This feature is still not working in the Windows desktop version of Outlook. It works on Outlook for Android and Outlook on the Web though. This is the desktop version of Outlook I am running.

 

Microsoft® Outlook® for Microsoft 365 MSO (16.0.14026.20202) 32-bit

 

What version does it allegedly work on?

New Contributor

@benoitrando You need to use the following syntax for Allow List. 

Add or remove specific domains to Allow List: Set-ExternalInOutlook -AllowList @{Add="admin@cohovineyard.com"; Remove="admin@fourthcoffee.com"}

Set-ExternalOutlook Syntax 

Occasional Visitor

Dear @The_Exchange_Team 

 

When will this feature be available for Outlook on Windows. As it's stated by the previous comments, this feature is still not in place yet (Outlook Version 2106 Build 14131.20278) but it is for any other platform. Please provide us with further info.

 

Many thanks.

Arbër

%3CLINGO-SUB%20id%3D%22lingo-sub-2250098%22%20slang%3D%22en-US%22%3ENative%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2250098%22%20slang%3D%22en-US%22%3E%3CH1%20id%3D%22toc-hId-1301235699%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301243165%22%20id%3D%22toc-hId-1301235699%22%3EOverview%3C%2FH1%3E%0A%3CP%3EWe%20know%20that%20some%20of%20our%20customers%20leverage%20Exchange%20transport%20rules%20to%20prepend%20subject%20line%20or%20insert%20the%20message%20body%20to%20show%20the%20email%20is%20from%20external%20senders.%20This%20approach%20has%20a%20few%20limitations%20which%20we%20heard%3A%3C%2FP%3E%0A%3CUL%3E%0A%3CLI%3EYou%20can%20end%20up%20with%20duplicate%20%5BExternal%5D%20tags%20in%20subject%20line%20if%20external%20users%20keep%20replying%20to%20the%20thread%20(some%20of%20our%20customers%20use%20customized%20solutions%20to%20remove%20the%20duplicates).%3C%2FLI%3E%0A%3CLI%3EAdding%20things%20to%20subject%20line%20breaks%20Outlook%20conversation%20threading%2C%20as%20the%20subject%20line%20is%20modified%2C%20so%20messages%20no%20longer%20%E2%80%9Cbelong%E2%80%9D%20to%20the%20same%20conversation.%3C%2FLI%3E%0A%3CLI%3EChanged%20subject%20(or%20message%20body)%20stays%20as%20a%20part%20of%20the%20message%20during%20reply%20or%20forward%2C%20which%20leads%20to%20confusion%20if%20the%20thread%20becomes%20internal.%3C%2FLI%3E%0A%3CLI%3EThere%20can%20be%20localization%20issues%2C%20as%20transport%20rules%20have%20no%20knowledge%20of%20client%20language%20that%20end-users%20are%20using.%3C%2FLI%3E%0A%3CLI%3EThose%20additions%20might%20take%20a%20lot%20of%20space%20in%20the%20subject%20line%2C%20making%20it%20hard%20to%20preview%20the%20subject%20on%20smaller%20devices.%3C%2FLI%3E%0A%3C%2FUL%3E%0A%3CP%3EWe%20have%20heard%20the%20feedback%20on%20this%2C%20and%20are%20working%20on%20providing%20a%20native%20experience%20to%20identify%20emails%20from%20senders%20outside%20your%20organizations%26nbsp%3B(which%20can%20help%20protect%20against%20spam%20%26amp%3B%20phishing%20threats).%20This%20is%20achieved%20by%20presenting%20a%20new%20tag%20on%20emails%20called%20%E2%80%9CExternal%E2%80%9D%20(the%20string%20is%20localized%20based%20on%20your%20client%20language%20setting)%20and%20exposing%20related%20user%20interface%20at%20the%20top%20of%20your%20message%20reading%20view%20to%20see%20and%20verify%20the%20real%20sender's%20email%20address.%3C%2FP%3E%0A%3CH1%20id%3D%22toc-hId--506218764%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506211298%22%20id%3D%22toc-hId--506218764%22%3ETo%20set%20this%20up%3C%2FH1%3E%0A%3COL%3E%0A%3CLI%3EExchange%20Online%20tenant%20admin%20will%20need%20to%20run%20the%20cmdlet%20%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fpowershell%2Fmodule%2Fexchange%2Fset-externalinoutlook%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%22%3ESet-ExternalInOutlook%3C%2FA%3E%20to%20enable%20the%20new%20user%20interface%20for%20the%20whole%20tenant%20(this%20is%20available%20now)%3B%20adding%20certain%20emails%20and%20domains%20to%20the%20allow%20list%20via%20the%20cmdlet%20is%20also%20possible.%3C%2FLI%3E%0A%3CLI%3EOutlook%20on%20the%20web%20already%20supports%20this.%20Outlook%20Mobile%20(iOS%20%26amp%3B%20Android)%20and%20Outlook%20for%20Mac%20are%20rolling%20out%20this%20feature.%20Specific%20versions%3A%3CUL%3E%0A%3CLI%3EOutlook%20on%20the%20web%3A%20available%20now%3C%2FLI%3E%0A%3CLI%3EOutlook%20for%20Windows%3A%20available%20in%20May%202020%20(starting%20with%20Insider%20Fast)%3C%2FLI%3E%0A%3CLI%3EOutlook%20mobile%20(iOS%20%26amp%3B%20Android)%3A%20version%204.2111.0%20and%20higher%3C%2FLI%3E%0A%3CLI%3EOutlook%20for%20Mac%3A%20version%2016.47%20and%20higher%3C%2FLI%3E%0A%3C%2FUL%3E%0A%3C%2FLI%3E%0A%3C%2FOL%3E%0A%3CP%3EIf%20you%20are%20using%20the%20prepend%20subject%20line%20transport%20rules%20currently%20to%20add%20an%20%5BEXTERNAL%5D%20tag%20in%20external%20email%20subject%20line%3A%20the%20new%20Outlook%20native%20callouts%20are%20adding%20a%20new%20MAPI%20property%20called%20%3CEM%3EIsExternalSender%3C%2FEM%3E%20to%20the%20email%20item.%20Once%20all%20the%20(above%20listed)%20client%20versions%20you%20require%20have%20this%20functionality%2C%20to%20avoid%20emails%20being%20marked%20%E2%80%98External%E2%80%99%20twice%20(once%20by%20new%20native%20functionality%20and%20once%20by%20the%20transport%20rule)%2C%20please%20turn%20off%20the%20transport%20rule%20first%20before%20turning%20on%20Outlook%20native%20external%20sender%20callouts.%3C%2FP%3E%0A%3CP%3EWe%20are%20tracking%20this%20feature%20in%20Microsoft%20365%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Fwww.microsoft.com%2Fmicrosoft-365%2Froadmap%3Ffilters%3D%26amp%3Bsearchterms%3D70595%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%22%3ERoadmap%20ID%2070595%3C%2FA%3E.%20This%20feature%20can%20be%20enabled%20on%20the%20tenant%20level%20now.%3C%2FP%3E%0A%3CP%3EOutlook%20on%20the%20web%2C%20Mac%2C%20and%20mobile%20will%20display%20an%20%3CEM%3EExternal%20tag%3C%2FEM%3E%20in%20the%20message%20list.%20Outlook%20Desktop%20and%20OWA%20will%20show%20the%20sender's%20email%20address%20at%20reading%20pane%20info%20bar.%20Outlook%20mobile%20and%20Outlook%20for%20Mac%20will%20only%20see%20an%20external%20tag%20on%20the%20message%20reading%20pane%2C%20and%20users%20will%20need%20to%20click%20the%20tag%20to%20see%20the%20real%20sender%E2%80%99s%20email%20address.%3C%2FP%3E%0A%3CP%3EOutlook%20on%20the%20web%20view%20of%20External%20sender%3A%3C%2FP%3E%0A%3CP%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-center%22%20image-alt%3D%22NativeOLExternal01.jpg%22%20style%3D%22width%3A%20978px%3B%22%3E%3CIMG%20src%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F268985iCD69FCBB8CB0EA11%2Fimage-size%2Flarge%3Fv%3Dv2%26amp%3Bpx%3D999%22%20role%3D%22button%22%20title%3D%22NativeOLExternal01.jpg%22%20alt%3D%22NativeOLExternal01.jpg%22%20%2F%3E%3C%2FSPAN%3E%3C%2FP%3E%0A%3CP%3EIn%20Outlook%20for%20iOS%2C%20External%20sender%20user%20interface%20in%20the%20message%20list%2C%20External%20tag%20when%20reading%20chosen%20email%20and%20view%20of%20sender's%20email%20address%20after%20tapping%20External%20label%3A%3C%2FP%3E%0A%3CP%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-center%22%20image-alt%3D%22NativeOLExternal02.jpg%22%20style%3D%22width%3A%20912px%3B%22%3E%3CIMG%20src%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F268986i91811BCAB2A1F7AC%2Fimage-size%2Flarge%3Fv%3Dv2%26amp%3Bpx%3D999%22%20role%3D%22button%22%20title%3D%22NativeOLExternal02.jpg%22%20alt%3D%22NativeOLExternal02.jpg%22%20%2F%3E%3C%2FSPAN%3E%3C%2FP%3E%0A%3CP%3EOnce%20this%20feature%20is%20enabled%20via%20PowerShell%2C%20it%20might%20take%2024-48%20hours%20for%20your%20users%20to%20start%20seeing%20the%20External%20sender%20tag%20in%20email%20messages%20received%20from%20external%20sources%20(outside%20of%20your%20organization)%2C%20providing%20their%20Outlook%20version%20supports%20it.%3C%2FP%3E%0A%3CP%3EIf%20enabling%20this%2C%20you%20might%20want%20to%20notify%20your%20users%20about%20the%20new%20feature%20and%20update%20your%20training%20and%20documentation%2C%20as%20appropriate.%3C%2FP%3E%0A%3CP%3ELet%20us%20know%20here%20if%20you%20have%20any%20feedback!%3C%2FP%3E%0A%3CP%3E%3CSPAN%20class%3D%22author%22%3EThe%20Outlook%20Team%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-TEASER%20id%3D%22lingo-teaser-2250098%22%20slang%3D%22en-US%22%3E%3CP%3EWe%20know%20that%20some%20of%20our%20customers%20leverage%20Exchange%20transport%20rules%20to%20prepend%20subject%20line%20or%20insert%20the%20message%20body%20to%20show%20the%20email%20is%20from%20external%20senders.%20This%20approach%20has%20a%20few%20limitations%2C%20so%20we%20are%20working%20on%20native%20functionality.%3C%2FP%3E%3C%2FLINGO-TEASER%3E%3CLINGO-LABS%20id%3D%22lingo-labs-2250098%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EAnnouncements%3C%2FLINGO-LABEL%3E%3CLINGO-LABEL%3EOutlook%3C%2FLINGO-LABEL%3E%3CLINGO-LABEL%3ETips%20'n%20Tricks%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2250884%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2250884%22%20slang%3D%22en-US%22%3E%3CP%3EThank's%20for%20the%20clarification%20for%20Outlook%20for%20Windows%20an%20Mac%20Versions%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2250890%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2250890%22%20slang%3D%22en-US%22%3E%3CP%3EI%20assume%20the%20Outlook%20for%20Windows%20availability%20date%20should%20be%20May%26nbsp%3B%3CSPAN%3E2021%20not%202020%20as%20stated%20above%3F%20When%20will%20this%20feature%20be%20added%20to%20Semi%20Annual%20Enterprise%20Channel%3F%20Love%20this%20feature%20but%20it%20does%20need%20more%20customisability...%20we%20need%20greater%20controls%20over%20the%20Allow%20List%20for%20senders%20that%20should%20not%20be%20tagged%20as%20external.%20The%20current%20limitations%20of%2030%20senders%2F1KB%20are%20way%20too%20small%20for%20large%20enterprises.%20We%20should%20also%20be%20able%20to%20exclude%20senders%20based%20on%20other%20criteria%20e.g.%20x-header.%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2251525%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2251525%22%20slang%3D%22en-US%22%3E%3CP%3EDo%20we%20have%20an%20option%20to%20exclude%20for%20certain%20senders%3F%26nbsp%3B%20If%20so%2C%20do%20you%20exclude%20by%20domain%20name%2C%20ip%20or%20range%20of%20IP%20addresses%3F%26nbsp%3B%20Thanks!%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2251918%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2251918%22%20slang%3D%22en-US%22%3E%3CP%3EWhat%20about%20on%20premesis%20Exchange%3F%20Actually%20I%E2%80%98m%20setting%20an%20X-Message-Flag%20with%20a%20transport%20rule%20but%20the%20solution%20above%20seems%20better.%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2251939%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2251939%22%20slang%3D%22en-US%22%3E%3CP%3EWhat%20are%20the%20benefits%20to%20users%20of%20distinguishing%20between%20internal%20and%20external%3F%20According%20to%20the%20Zero%20Trust%20concept%2C%20it%20is%20not%20appropriate%20to%20judge%20safety%20internally%20or%20externally.%20It%20would%20be%20more%20effective%20to%20display%20the%20impersonation%20judgment%20based%20on%20SPF%2C%20DKIM%2C%20and%20DMARC.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2251944%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2251944%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F59591%22%20target%3D%22_blank%22%3E%40shark_it%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3EFor%20Instance%20Images%20are%20downloaded%20automatically%20on%20internal%20Mails.%20This%20does%20not%20happen%20on%20external%20Mails.%20This%20Setting%20makes%20it%20only%20more%20visible%20for%20Clients.%20Especially%20on%20Mobile%20Clients.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F451487%22%20target%3D%22_blank%22%3E%40wkwi108%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3EIt%20is%20clearly%20stated%20that%20this%20is%20an%20Exchange%20Online%20Command%20%2F%20Functionality.%20I%20would%20not%20have%20high%20hopes%20that%20this%20comes%20back%20to%20OnPrem.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2253835%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2253835%22%20slang%3D%22en-US%22%3E%3CP%3EThanks%20for%20sharing%20this%2C%20looking%20forward%20to%20testing%20this!%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2254378%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2254378%22%20slang%3D%22en-US%22%3E%3CP%3EI%20realized%20this%20cannot%20be%20deployed%20to%20subset%20of%20users%20for%20testing%2Freviewing%20puposes%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2255637%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2255637%22%20slang%3D%22en-US%22%3E%3CP%3EGreat%20news!%20Any%20chance%20to%20pilot%20the%20feature%20for%20limited%20group%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2255861%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2255861%22%20slang%3D%22en-US%22%3E%3CP%3EThe%20-allowlist%20parameter%20seems%20not%20working%26nbsp%3B%3C%2FP%3E%3CP%3ESet-ExternalInOutlook%20-AllowList%20domainname.com%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EAnd%20the%26nbsp%3BGet-ExternalInOutlook%20still%20empty%20value%20for%20AllowList%3C%2FP%3E%3CP%3EEnabled%20%3A%20True%3CBR%20%2F%3EAllowList%20%3A%20%7B%7D%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2257659%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2257659%22%20slang%3D%22en-US%22%3E%3CP%3EAny%20advice%20on%20how%20to%20make%20use%20of%20this%20while%20still%20having%20the%20%22old%22%20methods%20as%20a%20fallback%20when%20a%20user%20is%20using%20a%20third-party%20mail%20client%3F%20Without%20that%2C%20this%20seems%20like%20a%20wasted%20effort.%20For%20example%2C%20is%20there%20a%20way%20to%20utilize%20a%20%22prepend%20text%22%20transport%20rule%20that%20prepends%20an%20external%20warning%20banner%20which%20does%20not%20appear%20if%20viewed%20in%20an%20Outlook%20client--effectively%20providing%20the%20native%20experience%20for%20Outlook%20clients%2C%20and%20the%20fallback%20experience%20for%20third-party%20clients%3F%20Without%20something%20like%20that%2C%20we%20(university)%20would%20unfortunately%20never%20be%20able%20to%20take%20advantage%20of%20the%20native%20experience%20as%20we%20would%20never%20get%20buy-in%20on%20blocking%20third-party%20mail%20clients.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2258275%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2258275%22%20slang%3D%22en-US%22%3E%3CP%3E%3CSPAN%3E%26nbsp%3B%22Outlook%20Desktop%20and%20OWA%20will%20show%20the%20sender's%20email%20address%20at%20reading%20pane%20info%20bar.%22%20So%20there%20will%20be%20no%20difference%20for%20Desktop%20users%3F%20Or%20if%20it%20is%2C%20could%20anybody%20please%20share%20a%20screenshot%20of%20what%20it%20would%20look%20like%3F%20I%20have%20not%20found%20a%20way%20to%20test%20this%20for%20a%20small%20group%20of%20users.%20If%20there%20is%20no%20difference%20for%20Desktop%20users%2C%20is%20the%20plan%20to%20implement%20this%20further%20down%20the%20line%3F%20Thanks%26nbsp%3B%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2258430%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2258430%22%20slang%3D%22en-US%22%3E%3CP%3EWill%20this%20ever%20be%20available%20for%26nbsp%3BWindows%20Outlook%202016%20%2F%202019%20clients%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2260515%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2260515%22%20slang%3D%22en-US%22%3E%3CP%3E%3CSPAN%20class%3D%22VIiyi%22%3E%3CSPAN%20class%3D%22JLqJ4b%20ChMk0b%22%3E%3CSPAN%3EToday's%20best%20news%2C%20really%20useful%20feature!%26nbsp%3B%3C%2FSPAN%3E%3C%2FSPAN%3E%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2261095%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2261095%22%20slang%3D%22en-US%22%3E%3CP%3EWhat%20about%20Hybrid%2C%20with%20external%20emails%20arriving%20first%20OnPrem%20they%20going%20to%20Exchange%20Online%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2261260%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2261260%22%20slang%3D%22en-US%22%3E%3CP%3EHow%20will%20these%20play%20with%20Anti-Impersonation%20and%20First%20Contact%20Safety%20Tips%3F%20What%20about%20non-Outlook%20clients%3F%20I%20can%20see%20First%20Contact%20Safety%20tips%20in%20Gmail%20app%20for%20example.%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2262430%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2262430%22%20slang%3D%22en-US%22%3E%3CP%3EI%20really%20like%20the%20simplicity%20of%20the%20functionality.%26nbsp%3B%20But%20I%20tend%20to%20agree%20with%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F59591%22%20target%3D%22_blank%22%3E%40shark_it%3C%2FA%3E%26nbsp%3B.%20As%20more%20and%20more%20organizations%20rely%20on%20external%20services%20for%20everyday%20applications%20and%20services%20we%20need%20a%20bit%20more%20flexibility%20than%20just%20allowed%20domains%20in%20the%20cmdlet.%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWe%20have%20internal%20mail%20relays%20that%20we%20would%20prefer%20to%20not%20show%20as%20'external'%20or%203rd%20party%20services%20we%20rely%20on%20and%20have%20trusted%20partnerships%20with%20this%20can%20become%20confusing%20to%20the%20end-user%20and%20ultimately%20just%20make%20them%20associate%20anything%20'external'%20as%20bad.%26nbsp%3B%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2266067%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2266067%22%20slang%3D%22en-US%22%3E%3CP%3EWhat%20is%20Microsofts%20recommendation%20-%20the%20action%20is%20this%20blog%20post%2C%20or%20thing%20command%3A%3C%2FP%3E%3CP%3E%3CSPAN%3E%3CSPAN%20class%3D%22token%20token%22%3ESet-OrganizationConfig%3C%2FSPAN%3E%20%3CSPAN%20class%3D%22token%20token%22%3E-%3C%2FSPAN%3E%3CSPAN%3EMailTipsExternalRecipientsTipsEnabled%20%3C%2FSPAN%3E%3CSPAN%20class%3D%22token%20token%22%3E%24True%3C%2FSPAN%3E%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2268626%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2268626%22%20slang%3D%22en-US%22%3E%3CP%3EPlease%20add%20some%20example%20screens%20it's%20how%20this%20will%20look%20in%20Outlook%20Desktop%20too.%20Would%20make%20it%20easier%20to%20explain%20this%20internally.%20But%20in%20short%20-%20great%20feature.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2270250%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2270250%22%20slang%3D%22en-US%22%3E%3CP%3EGlad%20to%20see%20this%20feature%20request%20getting%20traction.%20Having%20a%20native%20option%20to%20enable%20this%20will%20certainly%20make%20it%20easier%20for%20less%20technical%20orgs%2C%20but%20also%20streamline%20it%20for%20others.%20Will%20certainly%20be%20discussing%20this%20with%20the%20team%20and%20likely%20implementing%20soon.%20Thank%20you!%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2278271%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2278271%22%20slang%3D%22en-US%22%3E%3CP%3EGood%20start%20but%20how%20can%20I%20address%20obvious%20spoofed%20email%20addresses%20such%20as%20this%20one%3A%3C%2FP%3E%3CP%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-inline%22%20image-alt%3D%22billoreilly_0-1618859385931.png%22%20style%3D%22width%3A%20400px%3B%22%3E%3CIMG%20src%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F273836iC4B1C6CA11DD0C5B%2Fimage-size%2Fmedium%3Fv%3Dv2%26amp%3Bpx%3D400%22%20role%3D%22button%22%20title%3D%22billoreilly_0-1618859385931.png%22%20alt%3D%22billoreilly_0-1618859385931.png%22%20%2F%3E%3C%2FSPAN%3E%3C%2FP%3E%3CP%3EWould%20like%20to%20be%20able%20to%20add%20%22Spoofed%20Sender%22%20banner.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2281575%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2281575%22%20slang%3D%22en-US%22%3E%3CP%3EI%20hope%20there%20is%20going%20to%20be%20more%20work%20in%20the%20area%20of%20exceptions.%26nbsp%3B%20Excluding%20only%20to%20the%20recipient's%20email%20address%20is%20seriously%20weak.%26nbsp%3B%20Example%2C%20we%20have%20lots%20of%20cloud%20services%2C%20Azure%2C%20DATP%2C%20MCAS%2C%20and%20other%20non-microsoft%20services%20that%20generate%20email%20from%20external%2C%20that%20we%20do%20NOT%20want%20our%20current%20%22External%20Disclaimer%22%26nbsp%3B%20to%20be%20stamped%20on.%26nbsp%3B%20In%20those%20cases%20we%20use%20an%20exception%20based%20on%20the%20DKIM%20signature.%26nbsp%3B%20You%20also%20may%20want%20to%20exclude%20IP%20based%20on%20sender's%20IP%20range.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWe%20are%20a%20college%20and%20it%20would%20be%20simply%20chaotic%20to%20have%20emails%20from%20Blackboard%20or%20Canvas%2C%20for%20example%2C%20to%20all%20suddenly%20be%20labeled%20in%20this%20matter%20would%20scare%20recipients%20into%20thinking%20these%20emails%20are%20not%20legitimate.%26nbsp%3B%20Having%20the%20robust%20range%20of%20options%20in%20a%20transport%20rule%2C%20will%20keep%20us%20from%20using%20this%20until%20there%20are%20better%20exclusion%20options%20for%20this%20new%20commandlet.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2281659%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2281659%22%20slang%3D%22en-US%22%3E%3CP%3EIf%20Outlook%20also%20had%20optional%20tiny%20color-coded%20callouts%20for%20SPF%2C%20DKIM%2C%20DMARC%20(green%3Dpass%2C%20none%3Dgrey%2C%20fail%3Dred)%20the%20adoption%20rate%20of%20DMARC%20would%20skyrocket.%20And%20people%20would%20learn%20real%20quick%20what%20their%20purpose%20was.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EJust%20one%20callout%20for%20DMARC%20alone%20would%20be%20amazing%20and%20easier%20to%20implement%20since%20you%20wouldn't%20need%20to%20handle%20exceptions.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2281731%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2281731%22%20slang%3D%22en-US%22%3E%3CP%3EI%20agree%20with%20%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F3952%22%20target%3D%22_blank%22%3E%40Shon%20Miles%3C%2FA%3E%20that%20the%20exception%20by%20domain%20would%20defeat%20most%20of%20the%20reason%20for%20showing%20the%20alert.%26nbsp%3B%20Unless%20there%20is%20something%20else%20that%20would%20flag%20impersonated%20From%20addresses%2C%20or%20if%20it%20were%20exception%20by%20%3CEM%3Everified%3C%2FEM%3E%20domain%2C%20it%20would%20allow%20our%20domain%20to%20be%20impersonated%20if%20we%20allow%20any%20legitimate%20emails%20to%20be%20sent%20by%20a%20third-party%20service.%3CBR%20%2F%3E%3CBR%20%2F%3E%3CSTRONG%3EIs%20there%20any%20possibility%20that%20the%20%3CEM%3EIsExternalSender%3C%2FEM%3E%20flag%20could%20be%20set%20by%20a%20transport%20rule%20that%20we%20control%3F%3C%2FSTRONG%3E%26nbsp%3B%20This%20could%20give%20the%20benefits%20of%20having%20the%20alert%20always%20show%20in%20the%20clients%2C%20as%20well%20as%20not%20mangling%20the%20Subject%20or%20body%20or%20having%20it%20duplicated%20in%20the%20Subject.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2289209%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2289209%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F324116%22%20target%3D%22_blank%22%3E%40The_Exchange_Team%3C%2FA%3E%26nbsp%3B%20it%20would%20be%20good%20to%20be%20able%20to%20test%20this%20on%20few%20users%20first%20instead%20of%20applying%20to%20entire%20organization%20all%20at%20once.%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EThis%20has%20been%20major%20shortcoming%20for%20many%20features%20recently%2C%20All%20in%20or%20all%20out.%3C%2FP%3E%3CP%3ESince%20we%20cant%20really%20control%20this%20change%2C%20we%20opt%20not%20to%20implement%20and%20I%20am%20sure%20other%20companies%20feel%20the%20same%20way.%3C%2FP%3E%3CP%20data-unlink%3D%22true%22%3EMany%20of%20the%20concerns%20raised%20above%20are%20applicable%20to%20us%20as%20well%2C%20things%20like%20what%26nbsp%3B%3CSPAN%20class%3D%22%22%3E%3CSTRONG%3EShon%20Miles%3C%2FSTRONG%3E%26nbsp%3Bhas%20mentioned%20are%20very%20practical%20in%20many%20organizations.%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2291384%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2291384%22%20slang%3D%22en-US%22%3E%3CP%3EHas%20The%20Exchange%20Team%20designed%20something%20here%20which%20could%20be%20adopted%20across%20the%20industry%20as%20a%20common%20standard%3F%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWe%20know%20there%20are%20issues%20with%20the%20transport%20rule%20method%20(side%20note%3A%20an%20important%20limitation%20not%20mentioned%20in%20this%20article%20is%20that%20a%20targeted%20phishes%20can%20easily%20obfuscate%20the%20prepend%20html%20see%3A%20%3CA%20href%3D%22https%3A%2F%2Fwhynotsecurity.com%2Fblog%2Fexternal-email-warning-bypass%2F)%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fwhynotsecurity.com%2Fblog%2Fexternal-email-warning-bypass%2F)%3C%2FA%3E.%20This%20external%20tag%20is%20a%20remediation%20against%20all%20these%20limitations.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EI'd%20be%20keen%20to%20use%20this%20%3CEM%3EIsExternalSender%3C%2FEM%3E%20flag%20instead%20of%20prepend%20html%2C%20however%20it's%20currently%20only%20useful%20for%20Outlook%20users.%20If%20a%20user%20adds%20their%20O365%20mailbox%20to%20another%20mail%20client%2C%20they%20wouldn't%20get%20any%20warning%20if%20we%20turned%20off%20external%20transport%20rule.%3C%2FP%3E%3CP%3EThat%20makes%20me%20somewhat%20apprehensive%20about%20turning%20off%20the%20transport%20rule.%20I%20appreciate%20%22perfect%20can%20be%20the%20enemy%20of%20good%22%2C%20and%20that%2095%25%2B%20of%20our%20users%20would%20benefit%20from%20using%20the%20External%20Tag%20instead%20of%20the%20transport%20rule.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ECan%20%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F324116%22%20target%3D%22_blank%22%3E%40The_Exchange_Team%3C%2FA%3E%26nbsp%3Btake%20the%20use%20of%20this%20MAPI%20property%20as%20a%20way%20to%20encourage%20adoption%20by%20the%20wider%20mail%20community%20(mail%20service%20providers%20and%20mail%20client%20developers)%2C%20so%20that%20a%20common%20way%20of%20handling%20external%20tags%20across%20the%20industry%20is%20developed%20over%20time%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2306835%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2306835%22%20slang%3D%22en-US%22%3E%3CP%3EThere%20exists%20a%20third-party%20tools%26nbsp%3B%3CSPAN%3E%3CA%20href%3D%22https%3A%2F%2Fivasoft.com%2Ftagexternalflow.shtml%22%20target%3D%22_self%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3ETagExternal%20Flow%20for%20Office%20365%3C%2FA%3E%20and%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Fwww.ivasoft.com%2Frunjunkrules.shtml%22%20target%3D%22_self%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3ETagExternal%20for%20Exchange%202013%2F2016%2F2019.%3C%2FA%3E%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%3CSPAN%3EThe%20first%20one%20can%20be%20easily%20modified%20to%20implement%20additional%20features%20like%20excluding%20some%20external%20addresses%20etc.%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2307193%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2307193%22%20slang%3D%22en-US%22%3E%3CP%3EVictor%20Ivanidze%20-%20Thank%20you!!%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2307311%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2307311%22%20slang%3D%22en-US%22%3E%3CP%3EI%20honestly%20love%20this!%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EI%20just%20have%20a%20few%20questions%20that%20I%20hope%20you%20can%20answer.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3COL%3E%3CLI%3EWill%20it%20be%20possible%20to%20customize%20the%20external%20warning%20message%3F%3CUL%3E%3CLI%3EI'd%20like%20to%20also%20tell%20users%20about%20the%20%22Report%20Message%22%20button%2C%20if%20it%20is%20an%20unsafe%20sender.%3C%2FLI%3E%3C%2FUL%3E%3C%2FLI%3E%3CLI%3EIs%20it%20possible%20to%20enable%20this%20for%20a%20test%20group%20and%20not%20all%20users%3F%3CUL%3E%3CLI%3EI'd%20like%20to%20test%20it%20out%20beforehand%3C%2FLI%3E%3C%2FUL%3E%3C%2FLI%3E%3CLI%3EWe%20will%20be%20able%20to%20enable%20this%20in%20the%20Exchange%20Admin%20Center%20at%20some%20point%20or%20only%20PowerShell%3F%3CUL%3E%3CLI%3EIt's%20a%20little%20easier%20for%20me%20to%20take%20screenshots%20and%20show%20them%20to%20management.%3C%2FLI%3E%3C%2FUL%3E%3C%2FLI%3E%3C%2FOL%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2314930%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2314930%22%20slang%3D%22en-US%22%3E%3CP%3EHello%20all%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3Ewe%20are%20going%20to%20release%20a%20small%20utility%20for%20Windows%20that%20will%20allow%20a%20tenant%20admin%20to%26nbsp%3B%3CSPAN%3Emodify%20the%20configuration%20of%20external%20sender%20identification.%20No%20PowerShell%20at%20all!%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSTRIKE%3EI'll%20inform%20you%20here%20soon.%3C%2FSTRIKE%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%3E%3CSTRONG%3EUPDATE%3C%2FSTRONG%3E%3A%20%3CA%20href%3D%22https%3A%2F%2Fwww.ivasoft.com%2Fsetexternalinoutlook.shtml%22%20target%3D%22_blank%22%20rel%3D%22noopener%20nofollow%20noreferrer%22%3EHere%20it%20is%3C%2FA%3E.%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2320941%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2320941%22%20slang%3D%22en-US%22%3E%3CP%3EHello%20all%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3Eit%20looks%20like%20my%20modifications%20in%20the%20AllowList%20takes%20%22from%2024%20to%2048%20hours%22.%3C%2FP%3E%3CP%3EI've%20executed%26nbsp%3B%3C%2FP%3E%3CBLOCKQUOTE%3E%3CP%3ESet-ExternalInOutlook%20-AllowList%26nbsp%3B%20jdoe%40domainname.com%3C%2FP%3E%3CP%3EGet-ExternalInOutlook%3C%2FP%3E%3CP%3EEnabled%20%3A%20True%3CBR%20%2F%3EAllowList%20%3A%20%7B%3CA%20href%3D%22mailto%3Ajdoe%40domainname.com%7D%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3Ejdoe%40domainname.com%7D%3C%2FA%3E%3C%2FP%3E%3C%2FBLOCKQUOTE%3E%3CP%3E30%20hours%20ago.%26nbsp%3BBut%20when%20I%20send%20a%20message%20to%26nbsp%3B%3CA%20href%3D%22mailto%3Ajdoe%40domainname.com%7D%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3Ejdoe%40domainname.com%3C%2FA%3E%26nbsp%3Bthe%20tag%20External%20is%20still%20visible%20in%20OWA.%3C%2FP%3E%3CP%3ECan%20somebody%20confirm%20that%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2321252%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2321252%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F100937%22%20target%3D%22_blank%22%3E%40Victor%20Ivanidze%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3EI%20guess%20that%20the%20Internal%2FExternal%20is%20stamped%20at%20the%20Receive%20Time.%20I%20think%2C%20when%20you%20change%20the%20Setting%20it%20will%20only%20affect%20new%20received%20Mails.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ERegards%20Andres%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2321308%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2321308%22%20slang%3D%22en-US%22%3E%3CP%3EHi%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F207141%22%20target%3D%22_blank%22%3E%40Andres%20Bohren%3C%2FA%3E%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EIt%20seems%20I%20was%20unclear.%26nbsp%3B%3C%2FP%3E%3CP%3EI've%20changed%20the%20AllowList%2032%20hours%20ago.%20A%20minute%20ago%20I've%20sent%20a%20test%20message.%20It's%20still%20tagged%20that%20means%20that%20AllowList%20is%20not%20used.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2321931%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2321931%22%20slang%3D%22en-US%22%3E%3CP%3EHas%20this%20feature%20been%20enabled%20on%20Windows%2010%20With%20outlook%20yet.%20In%20the%20thread%20it%20mentions%20May%202021.%20Any%20update%3F%3F%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2321956%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2321956%22%20slang%3D%22en-US%22%3E%3CP%3EHi%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F1044736%22%20target%3D%22_blank%22%3E%40dhruv9211%3C%2FA%3E%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3Enot%20yet%20-%20at%20least%20on%20my%20Windows%202010%20and%20Microsoft%C2%AE%20Outlook%C2%AE%20for%20Microsoft%20365%20MSO%20(16.0.13929.20206)%2032-bit.%3C%2FP%3E%3CP%3E%3C!--%20EndFragment%20%20--%3E.%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2323254%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2323254%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F100937%22%20target%3D%22_blank%22%3E%40Victor%20Ivanidze%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWorks%20here%3C%2FP%3E%3CP%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-inline%22%20image-alt%3D%22ExO_ExternalInOutlook_04.jpg%22%20style%3D%22width%3A%20822px%3B%22%3E%3CIMG%20src%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F277988iABEB9D4FE9D8F0C4%2Fimage-size%2Flarge%3Fv%3Dv2%26amp%3Bpx%3D999%22%20role%3D%22button%22%20title%3D%22ExO_ExternalInOutlook_04.jpg%22%20alt%3D%22ExO_ExternalInOutlook_04.jpg%22%20%2F%3E%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-inline%22%20image-alt%3D%22ExO_ExternalInOutlook_05.jpg%22%20style%3D%22width%3A%20486px%3B%22%3E%3CIMG%20src%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F277989iA0768BB8ECA86BE3%2Fimage-size%2Flarge%3Fv%3Dv2%26amp%3Bpx%3D999%22%20role%3D%22button%22%20title%3D%22ExO_ExternalInOutlook_05.jpg%22%20alt%3D%22ExO_ExternalInOutlook_05.jpg%22%20%2F%3E%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2323390%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2323390%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F207141%22%20target%3D%22_blank%22%3E%40Andres%20Bohren%3C%2FA%3E%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F100937%22%20target%3D%22_blank%22%3E%40Victor%20Ivanidze%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3EOh%20that's%20great!%3CBR%20%2F%3EWe're%20currently%20still%20using%20Outlook%20Version%202104%20and%20haven't%20received%20the%20feature%20yet.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2325546%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2325546%22%20slang%3D%22en-US%22%3E%3CP%3EHi%20all%2C%3C%2FP%3E%3CP%3Eon%20my%20tenant%20AllowList%3CSTRIKE%3E%20just%20doesn't%20work%3C%2FSTRIKE%3E.%3C%2FP%3E%3CP%3E%3CSTRONG%3EUpdate%3A%3C%2FSTRONG%3E%20It%20has%20started%20working%20in%2060%20hours%20after%20populating%26nbsp%3BAllowList.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2347118%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2347118%22%20slang%3D%22en-US%22%3E%3CP%3EHi%20all%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EI%20want%20to%20test%20this%20feature%20on%20individual%20email%20addresses%20before%20I%20enable%20it%20for%20our%20entire%20domain.%26nbsp%3B%20Does%20the%20Set-ExternalInOutlook%20cmdlet%20allow%20for%20this%3F%26nbsp%3B%20In%20everything%20I%20read%20online%2C%20I%20can't%20find%20if%20this%20is%20possible%20(I%20can't%20find%20a%20parameter%20to%20enable%20individual%20email%20addresses%2C%20and%20not%20the%20entire%20domain).%26nbsp%3B%20%26nbsp%3BPlease%20confirm.%26nbsp%3B%20Thank%20you.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EAlso%2C%20some%20people%20in%20the%20previous%20comments%20(starting%20with%20Shark_IT)%20argue%20this%20feature%20is%20not%20beneficial.%26nbsp%3B%20I%20disagree.%26nbsp%3B%20Our%20users%20often%20receive%20emails%20purporting%20to%20be%20from%20our%20IT%20Dept.%20(from%20me%20and%20my%20team).%26nbsp%3B%20(They%20get%20past%20the%20Office%20365%20mail%20filter%20and%20have%20spoofed%20sender%20addresses.)%26nbsp%3B%20And%20our%20users%20ask%20us%20if%20those%20emails%20are%20legitimate.%26nbsp%3B%20If%20those%20emails%20were%20marked%20%22External%22%20our%20users%20would%20know%20they%20are%20not%20from%20us.%26nbsp%3B%20Granted%2C%20there%20are%20ways%20to%20figure%20out%20that%20the%20email%20is%20fake%20(but%20many%20of%20our%20users%20don't%20spot%20the%20easy%20clues).%26nbsp%3B%20%26nbsp%3BWe%20are%20trying%20to%20train%20our%20users%20to%20spot%20fake%2C%20malicious%20emails.%26nbsp%3B%20But%20this%20feature%20makes%20it%20much%20easier.%26nbsp%3B%20We%20don't%20ever%20have%20any%20fake%20or%20malicious%20emails%20originating%20internally.%26nbsp%3B%20%26nbsp%3BWhat%20is%20the%20harm%3F%26nbsp%3B%20I%20don't%20see%20any%20downside%20to%20enabling%20this%20new%20feature.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E-David%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2348502%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2348502%22%20slang%3D%22en-US%22%3E%3CP%3EHi%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F720301%22%20target%3D%22_blank%22%3E%40ians-uleth%3C%2FA%3E%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3Ecould%20you%20please%20let%20me%20know%20what%20%22third-party%20clients%22%20do%20you%20mean%3F%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2347819%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2347819%22%20slang%3D%22en-US%22%3E%3CP%3EHi%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F1051443%22%20target%3D%22_blank%22%3E%40GameChanger%3C%2FA%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26gt%3B%3CSPAN%3EI%20want%20to%20test%20this%20feature%20on%20individual%20email%20addresses%20before%20I%20enable%20it%20for%20our%20entire%20domain.%26nbsp%3B%3C%2FSPAN%3E%3C%2FP%3E%3CP%3EYou%20cannot%20do%20that.%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSTRONG%3EUpdate%3A%3C%2FSTRONG%3E%3C%2FP%3E%3CP%3ENot%20what%20you%20want%20but%20something%20that%20might%20be%20useful%3A%3C%2FP%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Fwww.ivasoft.com%2Fdisabletaggingflow.shtml%22%20target%3D%22_self%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3Ethe%20freeware%20Power%20Automate%20flow%20that%20disables%20the%20External%20tag.%3C%2FA%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2363098%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2363098%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F207141%22%20target%3D%22_blank%22%3E%40Andres%20Bohren%3C%2FA%3E%26nbsp%3B%2C%20do%20you%20have%20more%20screenshots%20of%20the%20%3CSTRONG%3Enormal%20Outlook%20client%3C%2FSTRONG%3E%3F%3C%2FP%3E%3CP%3EI've%20some%20questions%20about%20it%3A%3C%2FP%3E%3CP%3E1.%20are%20pictures%20of%20external%20senders%20automatically%20loaded%3C%2FP%3E%3CP%3E2.%20can%20you%20see%20the%20external%20tag%20in%20the%20list%20of%20emails%3C%2FP%3E%3CP%3E3.%20in%20the%20mail%20itself%2C%20is%20it%20only%20notifying%20about%20an%20external%20user%20or%20also%20prompt%20a%20block%20message%20(I%20see%20diffrent%20screenshots).%3C%2FP%3E%3CDIV%20class%3D%22lia-quilt-row%20lia-quilt-row-main%22%3E%3CDIV%20class%3D%22lia-quilt-column%20lia-quilt-column-24%20lia-quilt-column-single%20lia-quilt-column-main%22%3E%3CDIV%20class%3D%22lia-quilt-column-alley%20lia-quilt-column-alley-single%22%3E%3CDIV%20class%3D%22lia-message-body-wrapper%20lia-component-message-view-widget-body%22%3E%3CDIV%20class%3D%22lia-message-body%22%3E%3CDIV%20class%3D%22lia-message-body-content%22%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ESo%20it%20would%20be%20great%20to%20see%20the%20differences%20about%20the%20webclient%20and%20the%20normal%20client.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EThanks!%3C%2FP%3E%3C%2FDIV%3E%3C%2FDIV%3E%3C%2FDIV%3E%3C%2FDIV%3E%3C%2FDIV%3E%3C%2FDIV%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2370164%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2370164%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F100937%22%20target%3D%22_blank%22%3E%40Victor%20Ivanidze%3C%2FA%3EThird-party%20client%20meaning%20any%20non-Outlook%20mail%20client%20such%20as%20Spark%2C%20Mozilla%20Thunderbird%2C%20Apple%20Mail%2C%20etc.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2371126%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2371126%22%20slang%3D%22en-US%22%3E%3CP%3EHi%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F720301%22%20target%3D%22_blank%22%3E%40ians-uleth%3C%2FA%3E%2C%20thanks%20for%20your%20answer.%3C%2FP%3E%3CP%3ECould%20you%20please%20confirm%20the%20only%20method%20of%20tagging%20%3CSTRONG%3Ethat%20will%20work%20with%20all%20these%20mail%20clients%3C%2FSTRONG%3E%20is%20modifying%20of%20the%20Subject%20line%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2371341%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2371341%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F100937%22%20target%3D%22_blank%22%3E%40Victor%20Ivanidze%3C%2FA%3E%26nbsp%3BBut%20keep%20in%20Mind%20that%20changing%20the%20Subject%20Line%20may%20break%20the%20DMARC%20Signature.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2371360%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2371360%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F19248%22%20target%3D%22_blank%22%3E%40Marinus%20Witbraad%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26gt%3Bare%20pictures%20of%20external%20senders%20automatically%20loaded%3C%2FP%3E%3CP%3EDepends%20on%20your%20Junk-E-Mail%20Settings.%20Nothing%20new%20here%3C%2FP%3E%3CP%3E%26gt%3Bcan%20you%20see%20the%20external%20tag%20in%20the%20list%20of%20emails%3C%2FP%3E%3CP%3EIn%20Outlook%20on%20the%20Web%3A%20Yes%3C%2FP%3E%3CP%3EIn%20Outlook%20for%20Windows%3A%20No.%20You%20just%20see%20it%20in%20the%20Preview%20below%20the%20Subject%20Line%20%2F%20To%20Fields%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-inline%22%20image-alt%3D%22Outlook_External2.jpg%22%20style%3D%22width%3A%20999px%3B%22%3E%3CIMG%20src%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F282124iB55A194DD6EC030C%2Fimage-size%2Flarge%3Fv%3Dv2%26amp%3Bpx%3D999%22%20role%3D%22button%22%20title%3D%22Outlook_External2.jpg%22%20alt%3D%22Outlook_External2.jpg%22%20%2F%3E%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-inline%22%20image-alt%3D%22Outlook_External.jpg%22%20style%3D%22width%3A%20999px%3B%22%3E%3CIMG%20src%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F282123i0BF824946BCFB7DE%2Fimage-size%2Flarge%3Fv%3Dv2%26amp%3Bpx%3D999%22%20role%3D%22button%22%20title%3D%22Outlook_External.jpg%22%20alt%3D%22Outlook_External.jpg%22%20%2F%3E%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%26gt%3Bin%20the%20mail%20itself%2C%20is%20it%20only%20notifying%20about%20an%20external%20user%20or%20also%20prompt%20a%20block%20message%20(I%20see%20diffrent%20screenshots).%3C%2FP%3E%3CP%3EDon't%20know%20what%20you%20mean.%20I%20see%20only%20the%20Above.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ERegards%3C%2FP%3E%3CP%3EAndres%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2372154%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2372154%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F100937%22%20target%3D%22_blank%22%3E%40Victor%20Ivanidze%3C%2FA%3E%26nbsp%3B%20-%20Not%20sure%20what%20you're%20getting%20at%2C%20seems%20you're%20missing%20the%20point%20of%20my%20original%20post.%20Of%20course%20a%20subject%20line%20tag%2C%20or%20a%20body%20prefix%2Fsuffix%20would%20work%20with%20third-party%20clients.%20The%20problem%20is%20that%20there%20are%20no%20controls%20on%20this%20new%20Exchange%20Online%20feature%20to%20say%20first-party%20clients%20get%20the%20%3CEM%3EExternalInOutlook%3C%2FEM%3E%20warning%20while%20third-party%20clients%20and%20%3CSTRONG%3Eonly%3C%2FSTRONG%3E%20third-party%20clients%20get%20a%20fallback%20method%20of%20a%20body%20prefix%2Fsuffix%20or%20subject%20line%20tag.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2374806%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2374806%22%20slang%3D%22en-US%22%3E%3CP%3EHi%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F720301%22%20target%3D%22_blank%22%3E%40ians-uleth%3C%2FA%3E%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3Elet's%20suppose%20I%20create%20a%20group%20named%20%22ThirdPartyClients%22%20and%20also%20create%20a%20transport%20rule%20that%20will%20place%20%22External%22%20tag%20to%20the%20Subject%2FBody%20of%20the%20messages%20addressed%20to%20the%20members%20of%20this%20group.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EAfter%20enabling%20MS%20native%20ExternalInOutlook%20the%20first-party%20clients%20will%20use%20it%20but%20the%20members%20of%26nbsp%3B%22ThirdPartyClients%22%20group%20will%20see%20modified%20Subject%2FBody.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EIs%20this%20acceptable%20for%20you%20as%20a%20possible%20solution%20%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2374888%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2374888%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F100937%22%20target%3D%22_blank%22%3E%40Victor%20Ivanidze%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWhat%20are%20you%20trying%20to%20archieve%20with%20the%20Tagging%20of%20External%20Mails%3F%20Improve%20User%20awareness%20and%20security%20right%3F%3C%2FP%3E%3CP%3EIf%20you%20really%20want%20to%20improve%20security%2C%20then%20get%20rid%20of%20the%20Legacy%20Authentication%20Protocols%20and%20move%20to%20modern%20Clients%20that%20support%20Modern%20Authentication%20and%20Conditional%20Access%20Policies.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-inline%22%20image-alt%3D%22MSRSA_Account-Compromise-Rates.jpg%22%20style%3D%22width%3A%20999px%3B%22%3E%3CIMG%20src%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F282568i642CADC20802994C%2Fimage-size%2Flarge%3Fv%3Dv2%26amp%3Bpx%3D999%22%20role%3D%22button%22%20title%3D%22MSRSA_Account-Compromise-Rates.jpg%22%20alt%3D%22MSRSA_Account-Compromise-Rates.jpg%22%20%2F%3E%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2375957%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2375957%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F100937%22%20target%3D%22_blank%22%3E%40Victor%20Ivanidze%3C%2FA%3E-%20Interesting%20idea%2C%20thanks%20for%20that.%20But%20unfortunately%20that%20would%20not%20quite%20do%20the%20trick.%20Users%20that%20use%20both%20Outlook%20and%20third-party%20clients%20would%20see%20the%20fallback%20tag%20in%20Outlook%2C%20and%20I'm%20sure%20we%20have%20a%20lot%20of%20users%20that%20would%20fall%20into%20that%20category.%20But%20appreciated%20nonetheless!%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2376486%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2376486%22%20slang%3D%22en-US%22%3E%3CP%3EThis%20is%20not%20meant%20to%20tag%20subject%20or%20body%20of%20the%20email%2C%20it%20adds%20it's%20own%20little%20table.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EThis%20is%20good%20because%20if%20you%20add%20the%20word%20%22externa%22%20to%20the%20subject%20or%20body%20you%20can't%20search%20or%20sort%20properly.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EYou%20can%20only%20see%20these%20on%20the%20Outlook%20clients%20either%20windows%20or%20mobile.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2376504%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2376504%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F720301%22%20target%3D%22_blank%22%3E%40ians-uleth%3C%2FA%3E%2C%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26gt%3B%3CSPAN%3EUsers%20that%20use%20both%20Outlook%20and%20third-party%20clients%20would%20see%20the%20fallback%20tag%20in%20Outlook%3C%2FSPAN%3E%3C%2FP%3E%3CP%3EWell%2C%20for%20such%20users%20we%20have%20developed%20a%20tiny%20flow%20that%20suppress%20the%20native%20tagging%3A%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Fwww.ivasoft.com%2Fdisabletaggingflow.shtml%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fwww.ivasoft.com%2Fdisabletaggingflow.shtml%3C%2FA%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2386106%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2386106%22%20slang%3D%22en-US%22%3E%3CP%3EWe%20enabled%20it%20about%2024%20hours%20ago.%20It%20now%20works%20on%20mobile%20clients.%20It%20does%20not%20work%20on%20the%20desktop%20clients.%20We%20are%20running%20version%2016.0.13901.20516.%20The%20monthly%20enterprise%20channel.%20When%20will%20it%20work%20in%20the%20desktop%20client%3F%20What%20version%20do%20we%20need%3F%20I%20tried%20looking%20at%20the%20changelog%20for%20Office%2C%20but%20couldn't%20find%20any%20mention%20of%20this%20in%20any%20of%20the%20latest%20versions%3F%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fofficeupdates%2Fcurrent-channel%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%22%3Ehttps%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fofficeupdates%2Fcurrent-channel%3C%2FA%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2386402%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2386402%22%20slang%3D%22en-US%22%3E%3CP%3EI%20have%20never%20set%20up%20external%20tagging%20also%20get-externalinoutlook%20gives%20Enabled%3A%20false.%20Despite%20some%20of%20the%20external%20emails%20tagged%20as%20External%20some%20not%20in%20Outlook%20for%20Windows.%3C%2FP%3E%3CP%3EAny%20idea%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2386627%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2386627%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F1063442%22%20target%3D%22_blank%22%3E%40peterkarpati%3C%2FA%3E%26nbsp%3Bmust%20be%20configured%20as%20a%20transportrule%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2386748%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2386748%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F65061%22%20target%3D%22_blank%22%3E%40Casper%20Frank-Stender%3C%2FA%3E%26nbsp%3BNope.%20Mail%20Flow%20rules%20is%20empty%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2386771%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2386771%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F52567%22%20target%3D%22_blank%22%3E%40Casper%20Frank-Stender%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%3EWorks%20here%20with%20Outlook%20Version%202005%20(Build%2014021.20000)%20(Beta%20Channel)%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2387095%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2387095%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F207141%22%20target%3D%22_blank%22%3E%40Andres%20Bohren%3C%2FA%3E%26nbsp%3BI%20think%20you%20showed%20a%20screenshot%20of%20the%20warning%20that%20is%20provided%20when%20you%20forward%20or%20reply%20to%20an%20email%20that%20includes%20an%20external%20recipient.%20The%20thread%20is%20regarding%20the%20'Warning'%20that%20is%20inserted%20before%20the%20subject%20line%20when%20an%20email%20is%20RECEIVED%20from%20an%20external%20sender.%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EThis%20is%20not%20available%20in%20Outlook%20for%20PC%20yet.%20It%20is%20enabled%20on%20a%20per%20tenant%20basis%20and%20currently%20applies%20to%20Outlook%20on%20the%20Web%2C%20Outlook%20Mac%2C%20IOS%20%26amp%3B%20Android%20only.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2429472%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2429472%22%20slang%3D%22en-US%22%3E%3CP%3EAfter%20a%20couple%20of%20months%20of%20availability%2C%20where%20do%20we%20stand%20on%20creating%20exceptions%20by%20IP%20range%20and%20increasing%20the%20max%20entries%20beyond%2030%3F%20With%20all%20of%20the%20Microsoft%20sending%20addresses%20I%20suspect%20some%20customers%20may%20be%20beyond%2030%20for%20M365%20alone!%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2454468%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2454468%22%20slang%3D%22en-US%22%3E%3CP%3EThis%20feature%20is%20still%20not%20working%20in%20the%20Windows%20desktop%20version%20of%20Outlook.%20It%20works%20on%20Outlook%20for%20Android%20and%20Outlook%20on%20the%20Web%20though.%20This%20is%20the%20desktop%20version%20of%20Outlook%20I%20am%20running.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3C!--%20StartFragment%20%20--%3E%3C%2FP%3E%3CP%20class%3D%22pf0%22%3E%3CSPAN%20class%3D%22cf0%22%3EMicrosoft%C2%AE%20Outlook%C2%AE%20for%20Microsoft%20365%20MSO%20(16.0.14026.20202)%2032-bit%20%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%3C!--%20EndFragment%20%20--%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWhat%20version%20does%20it%20allegedly%20work%20on%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2458501%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2458501%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F346709%22%20target%3D%22_blank%22%3E%40benoitrando%3C%2FA%3E%26nbsp%3BYou%20need%20to%20use%20the%20following%20syntax%20for%20Allow%20List.%26nbsp%3B%3C%2FP%3E%3CBLOCKQUOTE%3E%3CP%3EAdd%20or%20remove%20specific%20domains%20to%20Allow%20List%3A%20%3CEM%3ESet-ExternalInOutlook%20-AllowList%20%40%7BAdd%3D%22admin%40cohovineyard.com%22%3B%20Remove%3D%22admin%40fourthcoffee.com%22%7D%3C%2FEM%3E%3C%2FP%3E%3C%2FBLOCKQUOTE%3E%3CP%3E%3CEM%3E%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fpowershell%2Fmodule%2Fexchange%2Fset-externalinoutlook%3Fview%3Dexchange-ps%22%20target%3D%22_self%22%20rel%3D%22noopener%20noreferrer%22%3ESet-ExternalOutlook%20Syntax%3C%2FA%3E%26nbsp%3B%3C%2FEM%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2515503%22%20slang%3D%22en-US%22%3ERe%3A%20Native%20external%20sender%20callouts%20on%20email%20in%20Outlook%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2515503%22%20slang%3D%22en-US%22%3E%3CP%3EDear%20%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F324116%22%20target%3D%22_blank%22%3E%40The_Exchange_Team%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWhen%20will%20this%20feature%20be%20available%20for%20Outlook%20on%20Windows.%20As%20it's%20stated%20by%20the%20previous%20comments%2C%20this%20feature%20is%20still%20not%20in%20place%20yet%20(Outlook%20Version%202106%20Build%2014131.20278)%20but%20it%20is%20for%20any%20other%20platform.%20Please%20provide%20us%20with%20further%20info.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EMany%20thanks.%3C%2FP%3E%3CP%3EArb%C3%ABr%3C%2FP%3E%3C%2FLINGO-BODY%3E
Co-Authors
Version history
Last update:
‎Apr 05 2021 08:00 AM
Updated by: