For me Foxmail is the best email client out there. It has one drawback though. It embeds Internet Explorer as HTML renderer.
Mozillas IE patcher fixes this!
You also need a version of “mozctlx.dll”. As i use K-melon as browser it was located in my HD already. A more advanced version is: Mozilla embedded
Step by step:
-open a shell (command.com or cmd.exe)
-go to folder where mozctlx.dll is
-type in the command: regsvr32 mozctlx.dll
-if you get a little window saying “DLLregisterService in mozctlx.dll succeed” or something, you are rolling.
-open iepatcher.exe from the iepatcher.zip file
-browse to foxmail
-open moz_foxmail.exe and be happy!