When I send mail as another user the sent mail only appears in my sent items and not the person that I sent it as

Question

I have permission to send email as another user. When I send the email as them, the sent email only appears in my sent items, not in the user I'm sending as sent items. I am able to view and send emails as them, but it isn't a shared mailbox.

Answer 1

Is this for Exchange Online? If so, you can toggle the flag to have messages saved in both the delegate and delegator's mailboxes. Details are here: https://learn.microsoft.com/en-us/exchange/recipients-in-exchange-online/manage-user-mailboxes/automatically-save-sent-items-in-delegator-s-mailbox

If you are using Exchange Server, the behavior can be modified by registry key: https://learn.microsoft.com/en-US/outlook/troubleshoot/email-management/email-remains-in-the-outbox-when-you-use-the-deleg