Email Signature Generator by cloudHQ - Free email signatures with logo, video, social icons & more!
Gmelius - Gmelius is the first collaboration platform designed for G Suite and your company's daily tools.
Email Signature Template Generator - Create your free email signature with our easy-to-use tool.
Mailtrack.io - The best email tracking solution I've found. Free
WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.