Add Outlook as an App in Teams?

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Occasional Contributor

Hi folks,


I am quite new here but have not found yet what I seek. I want my team to use Teams as their main hub for communication and one of the things I would like is to add an app in the left bar (in either the web or the desktop version) with which they can reach their outlook inbox (web version?). I have looked into App Studio but have no idea how to start or if it is even the right place to start. It seems a pretty easy thing (just an url?), yet I have no idea how to go about solving this. 

Thnx already!

14 Replies
best response confirmed by NerdyBen (Occasional Contributor)
Hi @NerdyBen

See here

This was a POC done recently. Note this isn’t officially supported but you can follow and reproduce the steps.

Hope that answers your question

Best, Chris

This was a feature they announced at Ignite this year. You could either do the POC as suggested, or you can wait till they roll it out. @NerdyBen 

Unfortunately, this wasn’t a feature announced at Ignite. The integration they announced was pulling an email into a Teams channel or pushing a Teams conversation into an email.

It wasn’t the integration of the outlook or outlook on the web experience into Teams, making it an app, pinning it to the app bar etc. The only full app experience which was announced was Yammer.

It remains to be seen if the full Outlook experience will follow the POC. Lots of people want to see that but Microsoft haven’t committed to that.

As you can see here that is still under review

Best, Chris

@Christopher Hoard I stand corrected. I thought I had seen the Outlook icon on the left-hand rail in one of the sessions.

Haha no doubt they had probably just done that POC themselves!

Best, Chris

Hi@Christopher Hoard ,


Thanks a lot! This is exactly what I need. I get stuck on step five though. I am a (the) teams admin yet I do not seem to have enough permissions to install the app. Reading the comments under the article I seem to be not the only one. But I'm confident I will find a way. Thanks a lot!

No worries.

It could be in the Teams Admin Centre that it’s not set up for custom apps. If you work through this it may help

Best, Chris
Hi Chris,

I've got it all to work, so thank you for your magnificent help! It took some time because updating permission policies can take up to one day to be implemented, which is ridiculously long imho. But eventually I got there!

all the best!

@NerdyBen Hello Nerdy, could you please share the pre-requisites and important things to note for completing this configuration?

I'm writing on Feb. 23, 2021, more than a year later and we still do NOT have a way to send an email to all MS Teams' team members. people are hard to change. Email is "official" when at Universities, Teams is NOT. I'd appreciate an integration to be rolled out: I want to email all my Teams' members. Please, MicroSoft, Make it happen! Thank you!
Well, actually you can email all your team's members. Depending on settings at tenant level (if I am right), every team has a shared mailbox available, like 𝘆𝗼𝘂𝗿-𝘁𝗲𝗮𝗺-𝗻𝗮𝗺𝗲@𝘆𝗼𝘂𝗿-𝘁𝗲𝗻𝗮𝗻𝘁-𝗻𝗮𝗺𝗲.𝗼𝗻𝗺𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁.𝗰𝗼𝗺

Hope this helps you.
Open Teams App from Outlook Meeting Invite
Go to Chrome Web Store - Extensions (
Enter dobpbiifmofcdlaagglbchamihcmooff into the search box.
Click to install it into your browser.

Any chance Microsoft would consider adding Outlook App to Teams? It's a good idea to add Outlook as part of the MS Teams, as improvement is a process, not a quantum leap! All M365 users are currently using 2 apps (Teams + Outlook) for their daily operations.
Remains under review at Feedback.

Hope that answers your question

Best, Chris