The issue we were having started with employee to employee email communication about an account with no record of the discussion being attached to the account record in Sugar. That was resolved with management beatings :-) and reminders about using the Send and Archive function.
The desire now is to have BPM sent emails attached to Account records as part of the BPM processes. I don't see a way to make that happen using Studio and the BPM Manager.
I am not hopeful that it can be done, but are there any thoughts on how this might be accomplished?