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Sender Icons for Outlook: Spot important emails faster, click fewer ads

Chrome extension by Tooltester · Productivity · Communication

  • Established publisher

A Chrome extension in Productivity · Communication with 9 users, barely installed. Audience over the last 30 days: +2.

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

What the developer says, and 3 screenshots

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

Users
9
Rating
not rated yet
Users, last 30 days
+2
Version
1.0.8
Updated in the store
2026-10-29
Published
2026-07-15
Manifest
V3
Browser access
2 permissions

How it has moved

Users
+2 since 02.10
6-13 · 12 readings
2026-10-29: released 1.0.8
  1. 2026-10-046
  2. 2026-10-088
  3. 2026-10-099
  4. 2026-10-1310
  5. 2026-10-1611
  6. 2026-10-1813
  7. 2026-10-1912
  8. 2026-10-2113
  9. 2026-10-2212
  10. 2026-10-2411
  11. 2026-10-3012
  12. 2026-11-019
Users
+2 since 01.09
6-13 · 25 readings
2026-09-24: released 1.0.72026-10-29: released 1.0.8
  1. 2026-09-017
  2. 2026-09-038
  3. 2026-09-047
  4. 2026-09-069
  5. 2026-09-077
  6. 2026-09-098
  7. 2026-09-107
  8. 2026-09-139
  9. 2026-09-178
  10. 2026-09-207
  11. 2026-09-256
  12. 2026-09-268
  13. 2026-09-287
  14. 2026-10-046
  15. 2026-10-088
  16. 2026-10-099
  17. 2026-10-1310
  18. 2026-10-1611
  19. 2026-10-1813
  20. 2026-10-1912
  21. 2026-10-2113
  22. 2026-10-2212
  23. 2026-10-2411
  24. 2026-10-3012
  25. 2026-11-019

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.

  • Run its own code on the pages it can access scripting
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.0.8
  2. Version 1.0.7

What changed recently

  1. Package size changed
  2. Store description rewritten
  3. Released version 1.0.8 (was 1.0.7)
Show the remaining 3
  1. Package size changed
  2. Store description rewritten
  3. Released version 1.0.7 (was 1.0.6)

The publisher

Tooltester publishes 3 listings we track, 1k users between them. Listed website: emailtooltester.com.

  1. Email Detective for Gmail: Identify ESPs & Check Authentication Tooltester · Productivity · Communication · published 2026-03-23 1k users ★ 4.9
  2. Email Detective for Outlook: Identify ESPs & Check Authentication Tooltester · Productivity · Tools · published 2026-05-29 122 users ★ 5.0

Like this one

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

  1. Outlook Ad Blocker Describes nearly the same job, smaller audience 5k users ★ 4.6
  2. Dark Mode for Outlook Describes nearly the same job, smaller audience 351 users ★ 4.1
  3. Inbox Tidy Describes nearly the same job, smaller audience 3 users (last published figure)
  4. Add Sender Email Address to Outlook Describes nearly the same job, smaller audience 24 users ★ 1.0
  5. MailTag Describes nearly the same job, smaller audience 12 users

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

HTML

<a href="https://extops.dev/extensions/fadlcnhbikiloleedmhnlnppocoeechn"><img src="https://extops.dev/extensions/fadlcnhbikiloleedmhnlnppocoeechn/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 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built