Well, modest looks really promising, and can handle my IMAP-Folders with >1000 Mails without problem. But there is one (for me) really important Feature missing (or did I just not find it??) : Thread View. Using Mailing-Lists without Thread View is just painfull . So for the Moment I will continue to use claws, but I will keep an eye on the modest developement.

seiichiro0185