Install the extension
Add MailSeen to Chrome and connect your Gmail account in under a minute.
Know the moment your emails are opened. Start tracking in less than a minute.
"Q3 Proposal" opened 2 min ago
"Following up" opened 3 times today
Read receipt logged for "Job Application"
Add MailSeen to Chrome and connect your Gmail account in under a minute.
Compose and send emails from Gmail like you always do — tracking happens automatically in the background.
See a real-time notification, open count, and timestamp the instant your email is read.
Get notified the second your email is opened — no refreshing, no guessing.
See exactly how many times an email was opened and when, down to the minute.
Time your follow-ups around actual read activity instead of sending blind.
No new inbox to check. MailSeen lives inside Gmail where you already work.
We only track emails you send through MailSeen. We never read or sell your email content.
Install once and every email you send from Gmail is tracked automatically, on any device.
“Finally know if my proposals are actually being read. Game-changer for my sales process.”
“I used to send blind follow-ups. Now I know exactly when to reach out.”
“Setup took two minutes and it just works inside Gmail.”
“My best investment this year. I stopped guessing and started following up at the right time.”
“Simple to set up, powerful in practice. Exactly what my inbox was missing.”
“The open timestamps alone have changed how I time my outreach.”
Read the latest notes on timing, privacy, and writing emails people actually respond to.
Knowing the exact moment your email is opened transforms a cold follow-up into a timely, relevant conversation.
Why context and timing matter more than the words you choose — and how to use both to your advantage.
A plain-English guide to staying compliant when tracking email opens in Europe.
Stop guessing. Start tracking every open, in real time, right inside Gmail.
Start free