Extension Tracker

GMass: Powerful mail merge for Gmail

400,000 users Rated 4.74 from 9,238 ratings Last updated 3 Nov 2026

By GMass, Inc. Live in the Chrome Web Store ehomdgjhgmbidokdgicgmdiedadncbgf Search Google ↗ Last checked 11 Nov 2026, 10:54 UTC

The listing

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

A powerful mass email and mail merge system for Gmail.Summary from the listing
Developer
GMass, Inc.
Enhanced Safe Browsing
Trusted. What this means →
Category
Productivity › Communication
First published
26 Aug 2015
Last updated
3 Nov 2026
Version
6.0.49
Size
311 KiB
Minimum Chrome
88
Languages
1 language

English (United States)

Website
http://www.gmass.co/
Support page
http://www.gmass.co/blog/how-to-get-the-best-support-from-the-gmass-team/
See Chrome Web Store page ↗ View its code or download CRX ↗
Users over time As shown on the Chrome Web Store
400KTracking began 27 Sep 202627 Sep4 Oct11 Oct18 Oct25 Oct1 Nov8 Nov2026-09-27: 400,000 users2026-10-03: 400,000 users2026-10-07: 400,000 users2026-10-13: 400,000 users2026-10-21: 400,000 users2026-10-27: 400,000 users2026-11-03: 400,000 users2026-11-04: 400,000 users2026-11-11: 400,000 users2026-11-04: new version2026-11-03: new version2026-10-07: new version400,000400KTracking began27 Sep18 Oct8 Nov2026-09-27: 400,000 users2026-10-03: 400,000 users2026-10-07: 400,000 users2026-10-13: 400,000 users2026-10-21: 400,000 users2026-10-27: 400,000 users2026-11-03: 400,000 users2026-11-04: 400,000 users2026-11-11: 400,000 users2026-11-04: new version2026-11-03: new version2026-10-07: new version400K
Average rating
4.704.8027 Sep11 Oct25 Oct8 Nov4.744.704.8027 Sep18 Oct8 Nov4.74
Number of ratings
9,2009,40027 Sep11 Oct25 Oct8 Nov9,2389,2009,40027 Sep18 Oct8 Nov9,238
New version One point per check. Source: the extension's public Chrome Web Store listing.
Show the numbers
CheckedUsersRatingRatings
2026-11-11400,0004.749,238
2026-11-04400,0004.759,228
2026-11-03400,0004.759,231
2026-10-27400,0004.759,236
2026-10-21400,0004.759,238
2026-10-13400,0004.759,246
2026-10-07400,0004.789,254
2026-10-03400,0004.789,249
2026-09-27400,0004.789,247
Users, 7 days
No change
since a week ago
Users, 30 days
No change
+0.0%
Rank
#524
by users, of 292,131 extensions
In its category
#9
of 7,816 in Communication

What changed

Every change found on a check, newest first

  1. New version 6.0.49, replacing 6.0.48.

  2. New version 6.0.48, replacing 6.0.46.

  3. New version 6.0.46, replacing 6.0.45.

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 where it runs scripts
  • http://inbox.google.com/*inbox.google.com
  • http://mail.google.com/*mail.google.com
  • https://inbox.google.com/*inbox.google.com
  • https://mail.google.com/*mail.google.com

More from this developer

Other extensions from the same publisher account

ExtensionUsersRatingRatingsCategory
Tracker Blocker: Stop trackers in emails7,000 3.0812 Workflow & Planning
All 2 extensions by GMass, Inc. →

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 11 Nov 2026, 10:54 UTC; next check around 19 Nov 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “GMass: Powerful mail merge for Gmail” (ehomdgjhgmbidokdgicgmdiedadncbgf). Chrome Web Store data, last checked 2026-11-11. https://extensiontracker.com/extension/ehomdgjhgmbidokdgicgmdiedadncbgf. Accessed 2026-11-13.
BibTeX
@misc{extensiontracker_ehomdgjhgmbidokdgicgmdiedadncbgf,
  title   = {GMass: Powerful mail merge for Gmail (ehomdgjhgmbidokdgicgmdiedadncbgf)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-11},
  url     = {https://extensiontracker.com/extension/ehomdgjhgmbidokdgicgmdiedadncbgf},
  urldate = {2026-11-13}
}

The data is free to reuse under CC BY 4.0.

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