Originally Posted By: hybrid8
mail you send via SMTP goes into your INBOX

Okay, that's weird. I see where they're coming from, sorta, but that's awkward.

Originally Posted By: hybrid8
The mail client can't delete mail from the POP server

Okay, the POP client can't delete mail out of the Gmail inbox. I'll give you that. But that isn't a violation of POP. It deletes it out of the POP box, though. Effectively, the web interface and the IMAP interface are synchronized, and the POP interface is really just a copy of everything that's sent to the "real" account. The POP RFC explicitly states that it has no interest in what goes on behind the scenes.
_________________________
Bitt Faulk