Compare software

MailtrackMailbutler
Freemium

A free tier adds a signature to tracked mail. Paid plans remove it and add features.

 Paid

Subscription service with a 14-day free trial.

Browser extension macOS, Browser extension
  • Simple, visible read receipts directly inside Gmail
  • Works inside Apple Mail and Gmail
  • Mail merge with scheduled sending
  • Tracking recipients without telling them is intrusive and often blocked
  • Free use adds a signature line to your emails, and it requires Gmail access
  • Email tracking reveals recipient activity, which some recipients object to
  • Requires a subscription after the trial
Browser extension Downloadable app, Browser extension
Closed source Closed source
License not stated License not stated
Account needed Account needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.