I have been using Claws Mail for quite some time (I’ve covered Claws Mail here on Ghacks quite a bit.) What I like about Claws Mail, over nearly every other email client, is that it’s incredibly configurable. If you can think of a configuration option, it’s probably there. In fact, some might say Claws Mail is too configurable. Doubt that? For those nay sayers out there, I give you Clawsker.
Clawkster is a GUI tool that allows the user to configure hidden configuration options for