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...
Mailcastr - Create email signature that tells when your email is read.✉️
Sigstr - Email signature marketing
Mailbum - Email signatures without the fuss
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.