Mailcastr - Create email signature that tells when your email is read.✉️
WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
Ugly Email for FireFox - Get back your email privacy, block email tracking
PixelBlock - Block email open tracking inside of Gmail
Email Signature Template Generator - Create your free email signature with our easy-to-use tool.
Mailintel - Analytics and reporting dashboard for transactional emails.