Wisestamp: Signatures for Webmail

Wisestamp is a Firefox extension that allows webmail users to automatically include colourful HTML signatures in their emails.  After installing the extension users have the option to specify two different types of signatures, personal and professional, and may alternate between the two at will.

Wisestamp currently supports Gmail, Hotmail, AOL and Yahoo mail.  Wisestamp is currently Firefox only although the company state that they are working on releasing versions for Internet Explorer, as well as for existing desktop email applications like Outlook Express and Thunderbird.  If you are a heavy webmail user and miss the ability to insert good looking signatures at the end of your messages, Wisestamp is definitely worth a try.