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Sylpheed is a simple, lightweight and featureful e-mail client based on the GTK+ GUI toolkit. It aims to combine a quick and responsive client, with a sophisticated interface, intuitive operation, as well as an abundant feature set.

Sylpheed uses a 3-paned display similar to the popular e-mail clients for Windows such as Outlook Express and Becky. Many commands are accessible with the keyboard like the Emacs-based mailers such as Mew and Wanderlust. This enables users to easily migrate to Sylpheed.

It stores mail in the MH Message Handling System.

It supports the following protocols: POP3, IMAP4rev1, SMTP, NNTP, SSL/TLSv1 (POP3, SMTP, IMAP4rev1, NNTP), IPv6.

 Sylpheed 3.4.2

Free to download



Hiroyuki Yamamoto and contributors


System Requirements
GTK+ 2.8.0
Pentium II 266MHz CPU

GTK+ 2.6.10
PentiumIII 500MHz CPU

Sylpheed Doc, Mailing List

Selected Reviews:
Softpedia, ITWorld

Features include:
  • Multiple accounts
  • Powerful filtering (POP3, IMAP4, local spool)
  • Powerful search (query search, quick search, search folder)
  • Junk mail control
  • Thread display
  • Display and transfer of attachments by MIME
  • Inline image display
  • News reader
  • SMTP AUTH support (PLAIN / LOGIN / CRAM-MD5)
  • CRAM-MD5 authentication (SMTP AUTH / IMAP4rev1)
  • APOP authentication (POP3)
  • PGP signature / encryption (requires GPGME)
  • Spell checking (requires GtkSpell)
  • X-Face display
  • User-defined headers
  • Mark / color label
  • Mew/Wanderlust compatible key bind
  • Multiple MH folder support
  • mbox importing / exporting
  • Action function to work with external commands
  • External editor
  • Message queueing
  • Automatic mail checking
  • Draft message
  • Template
  • Line-wrapping
  • Autosave
  • Clickable URI
  • Address book
  • Newly arrived and unread message management
  • Printing
  • Offline mode
  • Tray icon (minimize to tray icon, new mail notification)
  • Customization of toolbar
  • Remote operation by command line
  • Per-folder configuration
  • LDAP, vCard, and JPilot support in address book
  • CSV, LDIF file import in address book
  • Drag & Drop
  • Autoconf, automake support
  • Internationalization of messages by gettext
  • m17n (multilingualization) support

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Sylpheed also features in our 'Linux Equivalents to Windows Software' section. The category selector below allows you to filter the different types of software included in that separate article.


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Last Updated Sunday, November 23 2014 @ 04:57 AM EST

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