NEWOLDSTAMP - Email signature generator
WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
Exclaimer - Exclaimer offers Microsoft Office 365, Exchange, Outlook and G Suite solutions for email signatures, archiving, email utilities & more.
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.
Templafy - Document assembly & management software