Theses packages are tested for Linux-Mandrake 9.1 and are all in RPM format
 

Sylpheed version 0.9.3 for i586
Sylpheed is a powerfull Mail User Agent/News programmed in Gtk, light and fast, I advise it for you!
Sylpheed source RPM version 0.9.3
 
Sylpheed-Claws version 0.9.3 for i586
This version add some functions very usefull (return receipt, spell checker etc.) but it's not "the stable" one, contrary to Sylpheed
But i use it everyday at work/home and there is not problem with it, so try it :)
Sylpheed-Claws source RPM version 0.9.3

IMPORTANT: If you want to use sylpheed/sylpheed-claws, you need to install gpgme
If you want to compile sylpheed/sylpheed-claws, you need to install gpgme-devel
If you want to compile gpgme by yourself, you can download the source-rpm here
WARNING:"gpgme" package is THE SAME AS the version avaible in Mandrake9.1!

NEWS: THEME SET VERSION 0.8.7 FOR SYLPHEED-CLAWS!
Sylpheed-iconset (binary i586) for Sylpheed-Claws 0.8.2 or higher

Sylpheed-iconset (sources)

Some screenshots of Sylpheed-claws WITH themes HERE

  To install quikly theses packages (binary only), use this command:
  urpmi NameOfYourBinaryPackage.i586.rpm