WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
MySignature - MySignature is FREE Email Signature Generator that helps to create Professional Signatures for major email clients such as Outlook, Gmail...
Exclaimer - Exclaimer is the industry's leading provider of email signature solutions, empowering businesses to unlock the potential of email as a key digital advertising channel.
Drift - A messaging app that helps you grow your business.
Xink - Xink is a comprehensive email signature management and campaign tool designed specifically for the needs of marketers.
HTMLSig - htmlsig.com makes it easy to generate email signatures without any HTML coding skills.