FoxieWire.com

All platforms with Firefox: The WiseStamp beta Firefox add-on edits, saves, and applies rich HTML signatures to your web-based email accounts, including Gmail, Yahoo Mail, Hotmail, and AOL mail. With WiseStamp installed, you get a rich HTML editor that lets you create signatures with links, colors, images, and formatting, plus links to your favorite social network profiles. You can make more than one signature, too—like personal and business. Once you're in your webmail account, WiseStamp adds a signature drop-down so you can choose which sig to use with the current email, or it can insert it automatically. Take a look at some screenshots of WiseStamp in action.