Extension Tracker

Mail Seen - Unlimited Email Tracker for Outlook

435 users Rated 5.00 from 6 ratings Last updated 14 Jun 2025

By Mobile Internet Limited Live in the Chrome Web Store ihcdhfhodopdlmchbjpnijehipfbnfip Search Google ↗ Last checked 22 Oct 2026, 07:44 UTC

The listing

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

Know when your emails are opened!Summary from the listing
Developer
Mobile Internet Limited
Enhanced Safe Browsing
Trusted. What this means →
Category
Productivity › Communication
First published
29 May 2025
Last updated
14 Jun 2025
Version
1.6
Size
194 KiB
Minimum Chrome
88
Languages
1 language

English

Website
mailseen.com
Support page
https://www.mailseen.com/
See Chrome Web Store page ↗ View its code or download CRX ↗
Users over time As shown on the Chrome Web Store
380400420Tracking began 27 Sep 202627 Sep4 Oct11 Oct18 Oct2026-09-27: 378 users2026-10-22: 435 users435380400420Tracking began27 Sep11 Oct2026-09-27: 378 users2026-10-22: 435 users435
Average rating
4.804.905.0027 Sep4 Oct11 Oct18 Oct5.004.804.905.0027 Sep11 Oct5.00
Number of ratings
627 Sep4 Oct11 Oct18 Oct6627 Sep11 Oct6
New version One point per check. Source: the extension's public Chrome Web Store listing.
Show the numbers
CheckedUsersRatingRatings
2026-10-224355.006
2026-09-273785.006
Users, 7 days
No change
since a week ago
Users, 30 days
+57
+15.1%
Rank
#36,589
by users, of 292,131 extensions
In its category
#609
of 7,816 in Communication

What changed

Every change found on a check, newest first

No changes found since tracking began on 27 Sep 2026.

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://authapi-f6o7ittoia-uc.a.run.app/authapi-f6o7ittoia-uc.a.run.app
  • https://outlook.live.com/outlook.live.com
  • https://outlook.office.com/outlook.office.com
  • https://outlook.office365.com/outlook.office365.com
Sites where it runs scripts
  • https://outlook.live.com/*outlook.live.com
  • https://outlook.office.com/*outlook.office.com
  • https://outlook.office365.com/*outlook.office365.com
Browser features
  • declarativeNetRequestBlock or change network requests, using rules
  • declarativeNetRequestFeedbackSee which of its network rules matched

More from this developer

Other extensions from the same publisher account

ExtensionUsersRatingRatingsCategory
Mail Seen - Unlimited Email Tracker for Gmail6,000 4.77201 Workflow & Planning
Mail Seen - Unlimited Email Tracker for Yahoo1,000 4.5723 Communication
All 3 extensions by Mobile Internet Limited →

About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 22 Oct 2026, 07:44 UTC; next check around 23 Nov 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “Mail Seen - Unlimited Email Tracker for Outlook” (ihcdhfhodopdlmchbjpnijehipfbnfip). Chrome Web Store data, last checked 2026-10-22. https://extensiontracker.com/extension/ihcdhfhodopdlmchbjpnijehipfbnfip. Accessed 2026-11-13.
BibTeX
@misc{extensiontracker_ihcdhfhodopdlmchbjpnijehipfbnfip,
  title   = {Mail Seen - Unlimited Email Tracker for Outlook (ihcdhfhodopdlmchbjpnijehipfbnfip)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-10-22},
  url     = {https://extensiontracker.com/extension/ihcdhfhodopdlmchbjpnijehipfbnfip},
  urldate = {2026-11-13}
}

The data is free to reuse under CC BY 4.0.

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