Unlimited Email Tracker might be a bit more popular than WhoReadMe. We know about 1 link to it since March 2021 and only 1 link to WhoReadMe. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I am not a marketing person. Just an average user. But sometimes I need to know whether my mail is opened. For that reason, I was using http://whoreadme.com/ to track some of my emails. But the software is not been updated for the past 6 years and I have started to look for an alternative. Source: about 2 years ago
Snov.io is a free Gmail extension that can track when an email is opened, an attachment is viewed, and a link is clicked, and you can toggle each of these on/off. Source: about 3 years ago
ReadNotify - ReadNotify enables the user to know when email is sent and the reciever reads the email.
Mailtrack.io - The best email tracking solution I've found. Free
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.
Intelliverse Email Tracker - Intelliverse Email Tracker provides insights to increase the productivity of your emails.
EmailTracker.cc - Free Email Tracker for Gmail. Close More Deals with Comprehensive Email Tracking, Automated Follow-up Reminders, and Detailed Click Insights
GetNotify - GetNotify is a free email tracking software solution.