Thank you, also to behringer, for the suggestions. I used KMail when Linux was my primary system at home, years ago, nice to know it's still alive and kicking. I'm planning going back to Linux so it's a logical move.

Not sure changes will be good or bad, but rewriting implies some things stop working. My workflow is mostly fetch mail, read mail, done. Nothing fancy. If they want to write a new client, just do it and replace the old one only when they're on par functionally. But they never do that :(