Based on our record, MailTracker should be more popular than PixelBlock. It has been mentiond 4 times since March 2021. 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.
There have been some attempts by Google to restrict the amount of information that can be transmitted this way. For example,since 2013, Google has served all images in Gmail through its own proxy servers, which could hide your location from at least some tracking applications. And extensions such as Ugly Email and Pixel Block have been developed to block trackers on Chrome and Firefox. Source: over 2 years ago
MailerCheck is the best, but I used also Hunter in the past and it did its duty pretty well. Source: over 1 year ago
MailTracker for Gmail is free but it only shows you if the email has been opened. Source: over 2 years ago
Hunter mailtracker - Email tracker to see if/when/how often customer/ investors see your emails. Source: almost 3 years ago
Hunter Mail Tracker: This is a classic. Bring “WhatsApp” read checks to your email. Know each time your email gets opened. Period. Source: almost 3 years ago
Ugly Email for FireFox - Get back your email privacy, block email tracking
Mailtrack.io - The best email tracking solution I've found. Free
Mailpanion - Track your email clicks & prevent others from tracking you.
Snov.io - More leads. More sales. More revenue.
Inbox When Ready - Protect your focus... hide your Gmail inbox by default
EmailTracker.cc - Free Email Tracker for Gmail. Close More Deals with Comprehensive Email Tracking, Automated Follow-up Reminders, and Detailed Click Insights