Re: A Really Good Email Cluent
Claws Mail suits me just fine.
Claws is good, but has a couple of missing features. Namely, its calendar plugin is completely useless in a corporate environment because it does not support authentication. Otherwise, the IMAP and SMTP side seem OK.
It also has fairly extensive perl and python hooks so you can break your own head at will as you see fit - something you cannot do with T-Bird.