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Missend Guard for Gmail

Chrome extension by ハッカーかずの部屋 · Productivity · Communication

  • Trader

A Chrome extension in Productivity · Communication with 32 users, barely installed. Audience over the last 30 days: +19.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 5 screenshots

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

Users
32
Rating
5.0 (1 ratings)
Users, last 30 days
+19
Rating, last 30 days
+5.00 in 30 days
Version
1.1.1
Updated in the store
2026-09-02
Published
2026-08-25
Manifest
V3
Browser access
1 permission

How it has moved

Users
+19 since 03.10
13-34 · 17 readings
  1. 2026-10-0420
  2. 2026-10-0919
  3. 2026-10-1022
  4. 2026-10-1321
  5. 2026-10-1722
  6. 2026-10-1820
  7. 2026-10-1922
  8. 2026-10-2024
  9. 2026-10-2226
  10. 2026-10-2327
  11. 2026-10-2426
  12. 2026-10-2528
  13. 2026-10-2629
  14. 2026-10-2932
  15. 2026-10-3031
  16. 2026-11-0134
  17. 2026-11-0232
Rating
+5.00 since 03.10
reviewsrating 0.00-5.00 · 17 readings
  1. 2026-10-04reviews1rating5.00
  2. 2026-10-09reviews1rating5.00
  3. 2026-10-10reviews1rating5.00
  4. 2026-10-13reviews1rating5.00
  5. 2026-10-17reviews1rating5.00
  6. 2026-10-18reviews1rating5.00
  7. 2026-10-19reviews1rating5.00
  8. 2026-10-20reviews1rating5.00
  9. 2026-10-22reviews1rating5.00
  10. 2026-10-23reviews1rating5.00
  11. 2026-10-24reviews1rating5.00
  12. 2026-10-25reviews1rating5.00
  13. 2026-10-26reviews1rating5.00
  14. 2026-10-29reviews1rating5.00
  15. 2026-10-30reviews1rating5.00
  16. 2026-11-01reviews1rating5.00
  17. 2026-11-02reviews1rating5.00
Users
+26 since 31.08
5-34 · 29 readings
2026-09-02: released 1.1.1
  1. 2026-08-316
  2. 2026-09-025released 1.1.1
  3. 2026-09-046
  4. 2026-09-065
  5. 2026-09-085
  6. 2026-09-136
  7. 2026-09-155
  8. 2026-09-176
  9. 2026-09-2010
  10. 2026-09-2111
  11. 2026-09-2510
  12. 2026-09-2613
  13. 2026-10-0420
  14. 2026-10-0919
  15. 2026-10-1022
  16. 2026-10-1321
  17. 2026-10-1722
  18. 2026-10-1820
  19. 2026-10-1922
  20. 2026-10-2024
  21. 2026-10-2226
  22. 2026-10-2327
  23. 2026-10-2426
  24. 2026-10-2528
  25. 2026-10-2629
  26. 2026-10-2932
  27. 2026-10-3031
  28. 2026-11-0134
  29. 2026-11-0232
Rating
+5.00 since 31.08
reviewsrating 0.00-5.00 · 29 readings
2026-09-02: released 1.1.1
  1. 2026-08-31reviews0rating0.00
  2. 2026-09-02reviews0rating0.00released 1.1.1
  3. 2026-09-04reviews0rating0.00
  4. 2026-09-06reviews0rating0.00
  5. 2026-09-08reviews0rating0.00
  6. 2026-09-13reviews0rating0.00
  7. 2026-09-15reviews0rating0.00
  8. 2026-09-17reviews0rating0.00
  9. 2026-09-20reviews0rating0.00
  10. 2026-09-21reviews0rating0.00
  11. 2026-09-25reviews0rating0.00
  12. 2026-09-26reviews0rating0.00
  13. 2026-10-04reviews1rating5.00
  14. 2026-10-09reviews1rating5.00
  15. 2026-10-10reviews1rating5.00
  16. 2026-10-13reviews1rating5.00
  17. 2026-10-17reviews1rating5.00
  18. 2026-10-18reviews1rating5.00
  19. 2026-10-19reviews1rating5.00
  20. 2026-10-20reviews1rating5.00
  21. 2026-10-22reviews1rating5.00
  22. 2026-10-23reviews1rating5.00
  23. 2026-10-24reviews1rating5.00
  24. 2026-10-25reviews1rating5.00
  25. 2026-10-26reviews1rating5.00
  26. 2026-10-29reviews1rating5.00
  27. 2026-10-30reviews1rating5.00
  28. 2026-11-01reviews1rating5.00
  29. 2026-11-02reviews1rating5.00

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

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.1.1

What changed recently

  1. Package size changed
  2. Store description rewritten
  3. Store badges changed
Show the remaining 1
  1. Released version 1.1.1 (was 1.0.1)

The publisher

ハッカーかずの部屋. Listed website: cysecukazch.github.io.

Like this one

Listings the catalog judges closest in what they say they do.

  1. Send Checklist for Gmail™ - Review Before Sending Describes nearly the same job, smaller audience 26 users
  2. Safer Send Button Describes nearly the same job, smaller audience 25 users
  3. Gmail Pre-Send Alert Describes nearly the same job, smaller audience 125 users ★ 3.5
  4. Gmail Sender Guard Describes nearly the same job, smaller audience 6 users
  5. FinalCheck Describes nearly the same job, smaller audience 8 users ★ 4.5

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

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HTML

<a href="https://extops.dev/extensions/agjedfmihjheaajoodnfonhmfmjkmoio"><img src="https://extops.dev/extensions/agjedfmihjheaajoodnfonhmfmjkmoio/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-02. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built