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CMass — AI Gmail Campaigns + CRM

Chrome extension by CMass · Productivity · Communication

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A Chrome extension in Productivity · Communication with 15 users, barely installed. Audience over the last 30 days: +4.

Specific sites only: 3 match patterns.

What the developer says, and 1 screenshot

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
15
Rating
not rated yet
Users, last 30 days
+4
Version
1.0.13
Updated in the store
2026-06-12
Published
2026-06-01
Manifest
V3
Browser access
4 permissions, 3 site patterns

How it has moved

Users
+4 since 01.10
10-15 · 12 readings
  1. 2026-10-0912
  2. 2026-10-1010
  3. 2026-10-1311
  4. 2026-10-1611
  5. 2026-10-1712
  6. 2026-10-1811
  7. 2026-10-2113
  8. 2026-10-2212
  9. 2026-10-2314
  10. 2026-10-2713
  11. 2026-10-2915
  12. 2026-10-3115
Users
+10 since 31.08
5-15 · 25 readings
  1. 2026-08-315
  2. 2026-09-036
  3. 2026-09-056
  4. 2026-09-065
  5. 2026-09-088
  6. 2026-09-097
  7. 2026-09-139
  8. 2026-09-1511
  9. 2026-09-1712
  10. 2026-09-2112
  11. 2026-09-2511
  12. 2026-09-2712
  13. 2026-09-2811
  14. 2026-10-0912
  15. 2026-10-1010
  16. 2026-10-1311
  17. 2026-10-1611
  18. 2026-10-1712
  19. 2026-10-1811
  20. 2026-10-2113
  21. 2026-10-2212
  22. 2026-10-2314
  23. 2026-10-2713
  24. 2026-10-2915
  25. 2026-10-3115

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 3 match patterns.

  • https://mail.google.com/*
  • https://www.googleapis.com/*
  • https://api.cmass.io/*
  • See the address and title of every tab you have open tabs
  • Schedule work to run later alarms
  • Show you notifications notifications
Show the remaining 1
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

CMass. Listed website: cmass.io.

Like this one

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  3. FullMail: Smart Mail Merge Inside Gmail Describes nearly the same job, smaller audience 25 users
  4. OutMass Describes nearly the same job, smaller audience 181 users
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The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Users and rating on Ext Ops Panel

Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/pdihbpkpcoojmcoiggdndpoflplffanb/badge.svg)](https://extops.dev/extensions/pdihbpkpcoojmcoiggdndpoflplffanb)

HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-29. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built