One of the most under-used marketing channels

What's the most underrated marketing channel?

My answer is email signatures...hear me out

You send dozens of emails a day, to friends, colleagues, customers, & prospects.

Why not let your emails do marketing for you? Your email signature is vacant real estate.

Emailbadge.com is a (free) new tool that lets you create customized email signatures that promote you, your brand, or whatever else you want.

Simple way to get extra views & clicks on what matters to you, & turn your email signature into a marketing machine!

Has anyone used an email signature tool like this before?