New PBI: Claws Mail

The following PBI is now available through Software Manager:

Claws Mail: an e-mail client and news reader based on GTK+. Currently, many features are supported including POP3, IMAP, NNTP, multiple accounts, threading, filtering, MIME attachments, APOP, SMTP AUTH, SSL, IPv6, GnuPG, internalization, and more.

Thanks to Jesse Smith for creating this PBI and to draconian for requesting the PBI.