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Free Email Tracker for Gmail — Read Receipts & Open Tracking | Kilroy

Chrome extension by app.relaylabs · Productivity · Workflow

A Chrome extension in Productivity · Workflow with 1 users, barely installed.

Specific sites only: 4 match patterns.

What the developer says, and 5 screenshots

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

Users
1
Rating
not rated yet
Users, last 5 days
+1
Version
1.0.3
Updated in the store
2026-09-14
Published
2026-09-11
Manifest
V3
Browser access
2 permissions, 4 site patterns

How it has moved

Users
+1 since 12.09
0-1 · 3 readings
2026-09-12: appeared in the store2026-09-14: released 1.0.3
  1. 2026-09-120appeared in the store
  2. 2026-09-131
  3. 2026-09-161
Users
+1 since 12.09
0-1 · 3 readings
2026-09-12: appeared in the store2026-09-14: released 1.0.3
  1. 2026-09-120appeared in the store
  2. 2026-09-131
  3. 2026-09-161

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once 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: 4 match patterns.

  • https://mail.google.com/*
  • https://*.supabase.co/*
  • https://api.supabase.com/*
Show the remaining 1
  • https://ipwho.is/*
  • Sign you in with a Google account identity
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.0.3

What changed recently

  1. Package size changed
  2. Store description rewritten (84 → 100 characters)
  3. Renamed from "Kilroy" to "Free Email Tracker for Gmail — Read Receipts & Open Tracking | Kilroy"
Show the remaining 2
  1. Released version 1.0.3 (was 1.0.1)
  2. Appeared in the store

The publisher

app.relaylabs.

Like this one

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

  1. Email Tracker for Gmail by Makeinfo Describes nearly the same job, smaller audience 11 users
  2. Kikili — Email tracking for Gmail Describes nearly the same job, smaller audience 9 users
  3. MailTracker • Email Tracker for Gmail Describes nearly the same job, smaller audience 445 users ★ 5.0
  4. Driploop Email Tracker for Gmail Describes nearly the same job, smaller audience 5 users ★ 5.0
  5. Mail Tracker - Email Tracking for Gmail Describes nearly the same job, smaller audience 68 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.

Is this your extension?

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

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.