Question
I have access to a shared mailbox in Office 365, from which I send email. When I send a message, a copy of my message goes into my personal "Sent Items" folder and not the "Sent Items" folder of the shared mailbox. How can I make it so a copy is saved in the "Sent Items" box of the shared mailbox?
Overview
By default sent items are only saved in the mailbox of the primary mail user, no matter which email address is in the "From" field of the message. Follow the instructions below to create the desired result. Department level or better email administrator privileges required.
Answer
1. Connect to UCD's Office365 instance in PowerShell:
1a. Convert the mailbox to a shared mailbox if it isn't already using this command:
> Set-oMailbox -Identity <UPN> -Type "Shared"
2. Make the change to set Sent Items to populate on both sender and shared mailboxes:
> Set-oMailbox <UPN> -MessageCopyForSentAsEnabled $True
To undo the change if necessary run this:
> Set-oMailbox <UPN> -MessageCopyForSentAsEnabled $False
Additional Information
Want more control over Sent Items when using shared mailboxes?