Sylpheed is an e-mail client and newsreader software, based on GTK+ GUI toolkit. This free software solution is distributed under GNU GPL and runs on UNIX, Linux as well as X Windows System.

Sylpheed was developed aiming the following:
· Fast processing and Quick response with less memory and CPU usage
· Simple, sober and professional interface design
· Maximum features comparing other mailers
· Flexible interaction and stable performance

Sylpheed’s appearance and interface design resemble with some of the popular e-mail clients for Windows. For example, Outlook Express, Becky, Datula etc. While the interface design imitates the Emac-based mailers, most of the commands of Sylpheed are also accessible through keyboard. If you are using any other mailer, it won’t be difficult for you to switch over to Sylpheed since it provides same features like your existing mail clients.

Sylpheed manages messages in MH format and it can be used with other mailer based on MH format. Since the files correspond to one mail, there is less probability of losing mails with Sylpheed. It offers importing and exporting mbox format messages.

Following are some of the features of Sylpheed:
· Creating multiple accounts
· Displaying threads
· Filtering messages
· Supporting MIME (attachments)
· Authentication with SMTP, POP3
· Providing signature and encryption
· Supporting multiple MH folder support
· XML based address book
· Line wrapping