Send email merge from Shared Mailbox?

VasilMichev 

I am trying to do a similar thing, we do not have direct access to the shared mailbox, we use azure tenancy, and office 365 which means we can't configure this was, I am sure there is a way Microsoft can add a "from email" address to the mail merge system?

we use locked down PC's and accounts so unable to "create a profile" as we dont have permission to do so, or have a direct logon into the shared mailbox as its a "SHARED" mailbox not a unique mailbox that has been shared with others.

I would be grateful if you can provide assistance with this and hopefully Microsoft will add the facilities to select a mailbox or email address in the merge system.

Thanks in advance

Pete