NEWOLDSTAMP - Email signature generator
Black Pearl Mail - Black Pearl Mail offers email signature management solution for businesses.
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...
Sigstr - Email signature marketing
HTMLSig - htmlsig.com makes it easy to generate email signatures without any HTML coding skills.