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CBuongio's avatar
CBuongio
Copper Contributor
Apr 22, 2020

Duplicate Sent Items Even thought the box is checked to not save

Fairly recently my Outlook 2016 (through Office 365) has started duplicating all of my sent items.  I use a Gmail account and have followed the steps as instructed for outlook, as in the box has alre...
Oli_DE_1972's avatar
Oli_DE_1972
Copper Contributor
Aug 15, 2021

I have the same issue, but with the Outlook Account itself. 

a) I have configured Outlook with MS 365 in the standard (MS 365 way) - this works o.k.

b) Using the same MS365 account with a third party application, such as an CRM and with the IMAP Settings provided by MS for accessing this account.

 

All mails sent view the CRM (b)) show up twice in Outlook.  The option "do not save in sent folder" does not really work, as MS does let you change this option only in Outlook Rich client not in OWA. Additionally, I do want mails, sent via Outlook Rich Client "to be stored" in Sent folder too. 

 

A test with another account showed, the behavior for other (than MS) IMAP servers is the same, than for Microsoft itself. I have configured the MS365 as IMAP account in Outlook (instead of MS365), the mails showed up twice. With this setup (IMAP) the option of deselecting "save messages in Sent" folder can be deactivated. 

 

Looking in other forums I have not really been able to find a solution. Only workarounds to delete duplicate items. 

Diane_Poremsky_MVP's avatar
Diane_Poremsky_MVP
MVP
Aug 16, 2021
I'm not sure how the CRM using IMAP affects the web client - IMAP doesn't use the web client., it uses the SMTP service.

The problem is the CRM app's SMTP service doesn't allow you not to save sent items.... and when you send mail using smtp, the server will save a copy of the sent item. This is a fairly new feature - I first noticed it maybe 6 months ago. As far as I know, there isn't a way (using PowerShell or the admin UI) to disable this.

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