Thunderbird extensions under SM Mail
Quite a few useful Groupware extensions such as SyncKolab, Calendar and Lightning have popped up.
I could see these extensions as being wanted for SM Mail under quite a few environments and those who have already rolled it out would appreciate it.
If anyone wants to try, I would imagine SyncKolab would be a good start, as it seem to require anything outside the main TB distribution, except for the Calendar extension