Back in the days of our founding fathers, there was only one option for signing your documents: pen on paper or, if you wanted get really fancy, quill on parchment. And nobody did this better than John Hancock, which is why your sig is sometimes still called a John Hancock.

Luckily, today we have more options. You can sign things the old fashion way, electronically, or even with your thumbprint. But when it comes to email, most of us still rely on plain old text.

If you’re not using your email signature to dynamically funnel people back to your website, blog, and social media, you’re missing a huge opportunity. Every single email you send – regardless of whether it’s business or personal, formal or casual – is an opportunity to drive traffic right where you want it. If you’re not using this valuable real estate, you’re losing potential fans and clients.

But the mechanics of working with your email client can sometimes be a challenge. WiseStamp is a free service that lets you easily create a custom email signature. With a few clicks of the mouse, you can add your logo; social media icons; custom text; images and links; and you can even pull in the title of your latest blog post using RSS.

WiseStamp turns your email signature into a traffic source and a unique branding element. It works on all the major Webmail services (including Gmail, Yahoo, Hotmail, and AOL) and supports Firefox, Chrome, Thunderbird, Flock and Safari. WiseStamp does not work with Microsoft Outlook.