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SMTP Tool

Chrome Web Store listing by Developer One

A Chrome extension with 421 users, barely installed. Audience over the last 30 days: -29.

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

What the developer says, and 1 screenshot

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

Users
421
Rating
2.6 (10 ratings)
Users, last 30 days
-29
Rating, last 30 days
Steady over 30 days
Version
1.0.0.0
Updated in the store
2012-12-09
Published
2012-12-09
Manifest
V2
Browser access
No permissions declared

How it has moved

Users
-29 since 03.10
419-453 · 18 readings
  1. 2026-10-04451
  2. 2026-10-08444
  3. 2026-10-09442
  4. 2026-10-10449
  5. 2026-10-11441
  6. 2026-10-13447
  7. 2026-10-16453
  8. 2026-10-18448
  9. 2026-10-19443
  10. 2026-10-21445
  11. 2026-10-22448
  12. 2026-10-23439
  13. 2026-10-24436
  14. 2026-10-25432
  15. 2026-10-27431
  16. 2026-10-29419
  17. 2026-11-01421
  18. 2026-11-02421
Rating
unchanged since 03.10
reviewsrating 2.60 · 18 readings
  1. 2026-10-04reviews10rating2.60
  2. 2026-10-08reviews10rating2.60
  3. 2026-10-09reviews10rating2.60
  4. 2026-10-10reviews10rating2.60
  5. 2026-10-11reviews10rating2.60
  6. 2026-10-13reviews10rating2.60
  7. 2026-10-16reviews10rating2.60
  8. 2026-10-18reviews10rating2.60
  9. 2026-10-19reviews10rating2.60
  10. 2026-10-21reviews10rating2.60
  11. 2026-10-22reviews10rating2.60
  12. 2026-10-23reviews10rating2.60
  13. 2026-10-24reviews10rating2.60
  14. 2026-10-25reviews10rating2.60
  15. 2026-10-27reviews10rating2.60
  16. 2026-10-29reviews10rating2.60
  17. 2026-11-01reviews10rating2.60
  18. 2026-11-02reviews10rating2.60
Users
-41 since 01.09
419-474 · 32 readings
  1. 2026-09-01462
  2. 2026-09-02452
  3. 2026-09-05456
  4. 2026-09-06452
  5. 2026-09-07454
  6. 2026-09-08456
  7. 2026-09-10462
  8. 2026-09-13473
  9. 2026-09-15474
  10. 2026-09-17471
  11. 2026-09-20467
  12. 2026-09-21459
  13. 2026-09-25462
  14. 2026-09-27450
  15. 2026-10-04451
  16. 2026-10-08444
  17. 2026-10-09442
  18. 2026-10-10449
  19. 2026-10-11441
  20. 2026-10-13447
  21. 2026-10-16453
  22. 2026-10-18448
  23. 2026-10-19443
  24. 2026-10-21445
  25. 2026-10-22448
  26. 2026-10-23439
  27. 2026-10-24436
  28. 2026-10-25432
  29. 2026-10-27431
  30. 2026-10-29419
  31. 2026-11-01421
  32. 2026-11-02421
Rating
unchanged since 01.09
reviewsrating 2.60 · 32 readings
  1. 2026-09-01reviews10rating2.60
  2. 2026-09-02reviews10rating2.60
  3. 2026-09-05reviews10rating2.60
  4. 2026-09-06reviews10rating2.60
  5. 2026-09-07reviews10rating2.60
  6. 2026-09-08reviews10rating2.60
  7. 2026-09-10reviews10rating2.60
  8. 2026-09-13reviews10rating2.60
  9. 2026-09-15reviews10rating2.60
  10. 2026-09-17reviews10rating2.60
  11. 2026-09-20reviews10rating2.60
  12. 2026-09-21reviews10rating2.60
  13. 2026-09-25reviews10rating2.60
  14. 2026-09-27reviews10rating2.60
  15. 2026-10-04reviews10rating2.60
  16. 2026-10-08reviews10rating2.60
  17. 2026-10-09reviews10rating2.60
  18. 2026-10-10reviews10rating2.60
  19. 2026-10-11reviews10rating2.60
  20. 2026-10-13reviews10rating2.60
  21. 2026-10-16reviews10rating2.60
  22. 2026-10-18reviews10rating2.60
  23. 2026-10-19reviews10rating2.60
  24. 2026-10-21reviews10rating2.60
  25. 2026-10-22reviews10rating2.60
  26. 2026-10-23reviews10rating2.60
  27. 2026-10-24reviews10rating2.60
  28. 2026-10-25reviews10rating2.60
  29. 2026-10-27reviews10rating2.60
  30. 2026-10-29reviews10rating2.60
  31. 2026-11-01reviews10rating2.60
  32. 2026-11-02reviews10rating2.60

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.

We have not read this listing's manifest since we started keeping permission names. The counts above come from the last time we did.

The full permission history for this extension

What changed recently

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

The publisher

Developer One publishes 11 listings we track, 10k users between them. Listed website: adminkit.net.

  1. Ping Tool Developer One · published 2012-12-09 3k users ★ 1.8
  2. Telnet Tool Developer One · published 2012-12-09 2k users ★ 1.5
  3. Trace route Tool Developer One · published 2012-12-09 2k users ★ 2.1
Show 5 more from this publisher
  1. Blacklist check tool Developer One · published 2012-12-09 786 users ★ 2.3
  2. Admin Tools Developer One · Productivity · Workflow · published 2012-12-01 520 users ★ 3.3
  3. DNS Lookup Tool Developer One · published 2012-12-09 436 users ★ 3.0
  4. Whois Tool Developer One · published 2012-12-09 272 users ★ 2.7
  5. My IP Address Developer One · published 2012-12-09 112 users ★ 5.0

Like this one

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

  1. SMTP Tester - Check Email Server SMTP Tool Describes nearly the same job, smaller audience 115 users
  2. Refined testmail.app Describes a similar job, smaller audience 4 users
  3. Imitate Email Describes a similar job, smaller audience 27 users
  4. Mailrith - Email Deliverability Tester Describes a similar job, smaller audience 7 users
  5. InboxDebug - Email API Tester Describes a similar job, smaller audience 5 users (last published figure)

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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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/mdhcefonlpcnkhnncahmfinhoohoideg/badge.svg)](https://extops.dev/extensions/mdhcefonlpcnkhnncahmfinhoohoideg)

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 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built