Ext Ops Panel
Open dashboard

お返事メール下書き作成くん

Chrome extension by Kentaro Matsui · Productivity · Communication

A Chrome extension in Productivity · Communication with 57 users, barely installed. Audience over the last 30 days: +1.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says about it

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

Users
57
Rating
not rated yet
Users, last 30 days
+1
Version
1.8
Updated in the store
2026-10-07
Published
2025-05-17
Manifest
V3
Browser access
4 permissions, 1 site pattern

How it has moved

Users
+1 since 30.09
56-65 · 15 readings
2026-10-07: released 1.8
  1. 2026-10-0461
  2. 2026-10-0864
  3. 2026-10-0965
  4. 2026-10-1062
  5. 2026-10-1361
  6. 2026-10-1659
  7. 2026-10-1859
  8. 2026-10-2161
  9. 2026-10-2262
  10. 2026-10-2361
  11. 2026-10-2462
  12. 2026-10-2561
  13. 2026-10-2758
  14. 2026-10-2957
  15. 2026-10-3057
Users
-4 since 01.09
55-66 · 27 readings
2026-10-07: released 1.8
  1. 2026-09-0161
  2. 2026-09-0266
  3. 2026-09-0465
  4. 2026-09-1063
  5. 2026-09-1365
  6. 2026-09-1564
  7. 2026-09-1761
  8. 2026-09-2164
  9. 2026-09-2260
  10. 2026-09-2555
  11. 2026-09-2657
  12. 2026-09-2856
  13. 2026-10-0461
  14. 2026-10-0864
  15. 2026-10-0965
  16. 2026-10-1062
  17. 2026-10-1361
  18. 2026-10-1659
  19. 2026-10-1859
  20. 2026-10-2161
  21. 2026-10-2262
  22. 2026-10-2361
  23. 2026-10-2462
  24. 2026-10-2561
  25. 2026-10-2758
  26. 2026-10-2957
  27. 2026-10-3057

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

Every site you visit. This extension can read and change the content of any page you open.

  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Add items to the right-click menu contextMenus
Show the remaining 1
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.8

What changed recently

  1. Package size changed
  2. Store description rewritten
  3. Released version 1.8 (was 1.7)

The publisher

Kentaro Matsui publishes 6 listings we track, 4k users between them.

  1. PubMed in Perplexity Kentaro Matsui · Make Chrome Yours · Accessibility · published 2024-09-03 3k users ★ 5.0
  2. PLaMo翻訳で和訳 Kentaro Matsui · Productivity · Tools · published 2025-06-30 414 users ★ 5.0
  3. DeepL Write Invert Colors Kentaro Matsui · Make Chrome Yours · Accessibility · published 2023-04-04 223 users
Show 2 more from this publisher
  1. PubMed2EndNote Kentaro Matsui · Productivity · Tools · published 2026-07-06 189 users
  2. Sakana翻訳で和訳 Kentaro Matsui · Productivity · Tools · published 2026-07-06 111 users

Like this one

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

  1. Mail Reply AI Describes nearly the same job, smaller audience 3 users
  2. Contextual Email Response Drafter Describes nearly the same job, smaller audience 8 users
  3. AI Email Generator by Mosin Ansari Describes nearly the same job, smaller audience 3 users
  4. MailCompose Assist powered by GPT-3.5 Describes nearly the same job, smaller audience 93 users ★ 5.0
  5. aireply: Your Personalized Email Writing Assistant Describes nearly the same job, smaller audience 43 users ★ 5.0

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.

Want this mark on your extension in our catalog?

Verify that you are its author and you can show this mark on the card, with live banners for your site and README. How verification works

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

Connect it in a minute See what the panel does
Add a badge to your README or site

The badge shows the audience and rating from our last pass over the store and links back to this page.

Users and rating on Ext Ops Panel

Markdown

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

HTML

<a href="https://extops.dev/extensions/maogkfahnjhjccfjjhejjpdecbbfackj"><img src="https://extops.dev/extensions/maogkfahnjhjccfjjhejjpdecbbfackj/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 2026-10-29. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built