Yes, there are plenty:
Eudora
Thunderbird
Netscape's Mail
...and a whole slew of other ones.
Check versiontracker.com for some of the above mentioned mail clients as well as many others.
It may help to describe what exactly is happening when you say "my Mail application does not work." Does it not launch? Does it launch, but then lock up? Does it launch, then unexpectedly quit? Does it launch, but not send/receive emails? "Does not work" can mean just about anything under the sun... if you can clarify a bit, maybe we can help you get Mail working, as it is a nice email client.