Extension Tracker

Mail Tracker by Mailsumo • Email Tracker for Gmail

1,000 users Rated 5.00 from 2 ratings Last updated 3 Oct 2026

By Mailsumo.io Live in the Chrome Web Store eglpjlchpfmejldohiicolhaglloinoa Search Google ↗ Last checked 9 Nov 2026, 12:05 UTC

The listing

What the Chrome Web Store shows, as of the last check

Free, unlimited email tracking for Gmail. Mail Tracker tells you the moment your emails are opened, right inside Gmail.Summary from the listing
Developer
Mailsumo.io
Enhanced Safe Browsing
Trusted. What this means →
Category
Productivity › Communication
First published
6 Aug 2026
Last updated
3 Oct 2026
Version
1.2.0
Size
576 KiB
Minimum Chrome
88
Languages
1 language

English

Website
mailtracker.io
See Chrome Web Store page ↗ View its code or download CRX ↗
Users over time As shown on the Chrome Web Store
8009001KTracking began 27 Sep 202627 Sep4 Oct11 Oct18 Oct25 Oct1 Nov8 Nov2026-09-27: 723 users2026-10-04: 743 users2026-11-02: 1,000 users2026-11-09: 1,000 users2026-10-04: new version1,0008009001KTracking began27 Sep18 Oct8 Nov2026-09-27: 723 users2026-10-04: 743 users2026-11-02: 1,000 users2026-11-09: 1,000 users2026-10-04: new version1K
Average rating
4.804.905.0027 Sep11 Oct25 Oct8 Nov5.004.804.905.0027 Sep18 Oct8 Nov5.00
Number of ratings
227 Sep11 Oct25 Oct8 Nov2227 Sep18 Oct8 Nov2
New version One point per check. Source: the extension's public Chrome Web Store listing.
Show the numbers
CheckedUsersRatingRatings
2026-11-091,0005.002
2026-11-021,0005.002
2026-10-047435.002
2026-09-277235.002
Users, 7 days
No change
since a week ago
Users, 30 days
+257
+34.6%
Rank
#17,862
by users, of 292,131 extensions
In its category
#289
of 7,816 in Communication

What changed

Every change found on a check, newest first

  1. New version 1.2.0, replacing 1.1.1.

    Renamed from “MailTracker • Email Tracker for Gmail” to “Mail Tracker by Mailsumo • Email Tracker for Gmail”.

    The summary on the listing changed.

Developer history

Moves to another publisher account and new contact emails, newest first

No move to another account and no new contact email since tracking began on 27 Sep 2026.

We know contact emails only by a keyed hash, so they're never shown. Recent account and contact changes →

What it can access

From the extension's manifest, in plain language

Sites
  • https://mail.google.com/*mail.google.com
Sites where it runs scripts
  • https://mail.google.com/*mail.google.com
Browser features
  • declarativeNetRequestBlock or change network requests, using rules
  • scriptingRun scripts on sites it can reach
  • storageSave settings and data in your browser
Asked for later, if you agree
  • notificationsShow notifications

More from this developer

Other extensions from the same publisher account

ExtensionUsersRatingRatingsCategory
Email Extractor by Mailsumo • Bulk Email Scraper400,000 4.643,516 Workflow & Planning
Mail Finder by Mailsumo • Email Finder for LinkedIn20,000 4.2267 Tools
All 3 extensions by Mailsumo.io →

About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 9 Nov 2026, 12:05 UTC; next check around 15 Nov 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “Mail Tracker by Mailsumo • Email Tracker for Gmail” (eglpjlchpfmejldohiicolhaglloinoa). Chrome Web Store data, last checked 2026-11-09. https://extensiontracker.com/extension/eglpjlchpfmejldohiicolhaglloinoa. Accessed 2026-11-13.
BibTeX
@misc{extensiontracker_eglpjlchpfmejldohiicolhaglloinoa,
  title   = {Mail Tracker by Mailsumo • Email Tracker for Gmail (eglpjlchpfmejldohiicolhaglloinoa)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-09},
  url     = {https://extensiontracker.com/extension/eglpjlchpfmejldohiicolhaglloinoa},
  urldate = {2026-11-13}
}

The data is free to reuse under CC BY 4.0.

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