This program is an X based fast email client which has features like:
o user-friendly and intuitive interface
o integrated NetNews client (partially implemented)
o ability of keyboard-only operation
o Mew/Wanderlust-like key bind
o multipart MIME
o unlimited multiple account handling
o message queueing
o assortment function
o XML-based address book
See /usr/share/doc/sylpheed*/README for more information.