Sylpheed is a lightweight, yet feature packed, email program that offers all the standard functionality of an email client along with many additional features, such as integrated Bayesian spam filtering, email templates, PGP support, mail processing rules and filters, support for external commands, and more. The program supports POP3, IMAP4rev1 and SMTP, NNTP (NetNews),IPv6 and encrypted communication over SSL/TLSv1.
Other features include import/export (eml and Unix mbox format), extensive internationalization and multilingualization support, email search, and more.
