Sylpheed   - lightweight and user-friendly e-mail client -


The source packages of the stable and development version of Sylpheed, and the Win32 binary for Windows and Mac OS X binary are available.

Some files are also downloadable from (formerly

Only bugfixes, security fixes, and small feature improvements and changes will be made for the 'Stable' version of Sylpheed. Usually it is recommended to use this version.

The 'Development' version will be released to test its stability when large addition of features and feature changes are made.

Plug-ins, The full-text search program for Sylpheed Sylph-Searcher and Sylpheed core library LibSylph are also available.

Windows version (stable, for Windows 7 / 8 / 10) [Updated: 31 Jan 2018]

This is a 32-bit application which works on Windows 7 or later. All required files such as GTK+ library are included, so you can execute it right after the installation.

Please read the included README-win32.txt before executing it.

TypeFileLinkSizePGP signature
Installer version Sylpheed-3.7_setup.exe ( ( 7.9MB PGP signature
Zip archive version ( ( 10.4MB PGP signature

The source code of included libraries

Source code (stable version) [Updated: 31 Jan 2018]

TypeFileLinkPGP signature
Source package (tar.bz2) sylpheed-3.7.0.tar.bz2 ( ( PGP signature
Source package (tar.xz) sylpheed-3.7.0.tar.xz ( ( PGP signature
Source package (tar.gz) sylpheed-3.7.0.tar.gz PGP signature

All previous versions

Windows version (development, for Windows 8 / 10) [Updated: 14 Sep 2022]

TypeFileLinkSizePGP signature
Installer version Sylpheed-3.8beta1_setup.exe ( ( 8.0MB PGP signature
Zip archive version ( ( 10.6MB PGP signature

Mac OS X version (development, for Mac OS X 10.6 or later) [Updated: 18 Apr 2014]

TypeFileLinkSizePGP signature
Installer package (.dmg) Sylpheed_3.4.1-test1.dmg ( ( PGP signature

Source code (development version) [Updated: 14 Sep 2022]

TypeFileLinkPGP signature
Source package (tar.bz2) sylpheed-3.8.0beta1.tar.bz2 ( ( PGP signature
Source package (tar.xz) sylpheed-3.8.0beta1.tar.xz ( ( PGP signature
Source package (tar.gz) sylpheed-3.8.0beta1.tar.gz PGP signature
Patch to the previous version (bz2) sylpheed-3.7.0-3.8.0beta1.patch.bz2 PGP signature
Patch to the previous version (gz) sylpheed-3.7.0-3.8.0beta1.patch.gz PGP signature


Automatic Attachment Encryption Plug-in sylpheed-autoenc-plugin [New: 2020/4/23]

This is a plug-in to make attached files an encrypted zip file automatically when sending mails. Password notification mail is created according to template after sending.

This plug-in requires Sylpheed 3.5.1 or later and 7-Zip.

Win32 binary (for Windows 8.1 / 10) (PGP signature)

Source code

The source code is available at GitHub.


Sylph-Searcher is a program that enables fast full-text search of messages stored in mailboxes of Sylpheed, or normal MH folders.

Sylph-Searcher requires the following programs:

GLib 2.4.0 or later (
GTK+ 2.4.0 or later (
MeCab 0.96 or later + mecab-ipadic (
PostgreSQL 8.3 or later, or 8.2 + tsearch2 (
LibSylph 1.0.0 or later (

The license of Sylph-Searcher follows the BSD license.

Win32 installer (for Windows Vista / 7 / 8)

This is the installer package which includes all components required for Sylph-Searcher. PosgreSQL will also be automatically setup, so you can easily use it.

Sylph-Searcher-1.2.0_setup.exe (13.7MB) (PGP signature)

Win32 binary (zip archive, for Windows Vista / 7 / 8)

GTK+, LibSylph, etc. are included. You can start using it after preparing PostgreSQL server and MeCab. (5.2MB) (PGP signature)

Source package

sylph-searcher-1.2.0.tar.gz (PGP signature)


LibSylph is a library which provides Sylpheed's core features independent from the UI of Sylpheed. You can utilize the features of Sylpheed from other applications using LibSylph. You can also create new mail clients with LibSylph. Moreover, LibSylph provides many APIs, which can be used independently, such as mail-related function, encoding conversion, string processing, I/O, XML processing, etc.

The license of LibSylph follows GNU LGPL.

Source package

libsylph-1.1.0.tar.bz2 (PGP signature)