Simple, lightweight but featureful, and easy-to-use e-mail client. It provides intuitive user-interface and fast operation.
You can download file releases of Sylpheed project from List of release files
System RequirementsOperating System: MacOSX, POSIX (Linux,BSD,Solaris etc..), Windows
Windows XP / Vista / 7 / 8 (32bit / 64bit)
Linux, *BSD, Solaris, and others
Mac OS X 10.6
List of release files