Review of MailTracker powered by the Slant community.
Free email tracking software
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free
No paid features, watermarks, etc.
Pro Power by: CreaTuMarca
Cons
Con Does not distinguish between multiple receipients
When you send an email to more than one person (group emails), it isn't currently able to identify who's opened the mail and who hasn't.