I have a shared mailbox that 3 users use as an additional mailbox on their outlook 2010.
They all have 'send as' permissions on this mailbox and this is working as expected.
One of the users would like the email he 'send as'-es to go into the sent items folder of this additional mailbox, currently it goes into his own mailbox's 'sent items'
I assumed a rule could handle this but there is no rule to check for messages 'from' a specific person or mailbox using the 'apply this rule after I send the message' option