Convert resource mailbox to a user mailbox

Based on my audit for a client I found that a user mailbox was at sometime converted to a resource mailbox. There is no convert button/ link to switch it back. I still don’t know how, or why this would have happened.

Anyways, for someone who may come across this weird issue, here is the fix for it.

This will convert it from a shared mailbox, or a resource mailbox to a user mailbox.

Saving emails in the ‘Sent Folder’ of shared mailboxes

When composing a message from a shared mailbox, by default when the message is ‘sent’, it is copied to the Sent Items for the user composing the message and not the Sent Items folder on the shared mailbox. Well, conveniently there is a way to enable this option in Exchange 2016 and Office365.

I don’t understand why this option is not turned on by default because it accounts for a message sent from a shared mailbox yet there is no historical record of the message being sent from the mailbox. Apart from journaling if it is enabled or a third party software/ service.