KISS

[Bob Warwick]

> - A Rock-solid IMAP layer, wherein lots of the ancient protocol  
> shenanigans are handled. In particular, handling of Gmail IMAP must  
> be flawless. And because google did weird things to it's IMAP  
> implementation, well, this is gonna be fun.
>
> - An abstraction layer on top of IMAP, where we can pretend we don't  
> know about IMAP, but perform IMAPish actions on the mail pool.

Would MailCore be a good starting point for this?  http://www.mronge.com/m/MailCore/API/index.html