Mozilla Releases Thunderbird 2.0.0
An anonymous reader writes "The Mozilla Corporation has released Thunderbird 2.0.0. Among the improvements are Message Tagging, updated UI, Advanced Folder Views, Better New Mail Notification and Full Support for Windows Vista and 64-bit versions of Windows."
Most corporations use the groupware in Exchange/Outlook, Thunderbird can't really compete there as it does not have a proper exchange equivalent to talk to.
I've seen countless people use Thunderbird as a regular email client, that they use with their personal email.