EmailGreen - EmailGreen is a web-based email marketing and comprehensive CRM solution that is created to help organizations and companies manage their contacts and execute all the valuable campaigns as well as optimize social media channels among other so they c…
GetNotify - GetNotify is a free email tracking software solution.
Intelliverse Email Tracker - Intelliverse Email Tracker provides insights to increase the productivity of your emails.
Bananatag - Find out what happens to your emails after you press send! Add email tracking, attachment tracking, email scheduling and templates to your daily emails.
GMass - GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!
Mailtrack.io - The best email tracking solution I've found. Free