I am testing eM Client and the scenario is that users will be connecting to O365 accounts with shared mailboxes and they have send as permissions on those mailboxes.
When sending an email I can select the “from” address to be the shared mailbox and that works, but the email item is then placed in the default mailbox’s sent items. I need the item to be in the shared mailbox sent items so that others can see it.
I can’t see anything in the options to alter this behaviour?
With Exchange (0365) accounts, the server always creates the sent message and we have no control over where it puts it. We just sync the folders and show the message where the server has placed it.
This is something you would need to ask Microsoft to change.