Sent mails from a shared mailbox end up in my users sent items

New Contributor

When I send a mail from my shared mailbox from either Outlook where it is added as an additional mailbox or from my website, where I use SMTP auth, the mails are stored in my personal mailbox' sent items.


I want the sent item to be saved in the shared mailbox' sent items ONLY.

I have of cause enabled the copy sent items to mailbox in O365 admin, for the shared mailbox.


I authenticate from me web app using my personal mailbox account and it has sent as permission on my shared mailbox.

I send a lot of mails from my web app and I really dont want them in my sent items.


Do any of you know how to fix this?

5 Replies
You need to add a reg key to the PC to be able to do so. Googl it. You can set it via gpo to all stations or manually to this PC only.
best response confirmed by aTaxX (New Contributor)

It's from a mac and OWA, so GPOs and regedit hacks does not work.

I found another solution - thanks.

Hi @aTaxX, what solution? 


@Victor Ivanidze 


A totally different setup.

Using an om-prem mailserver and an o365 connector, allowing me to send out the mails from my various systems.