SentSonar — Accurate Email Open Tracking

What it can reach

Specific sites only: 2 match patterns.

• https://mail.google.com/*
• https://api.plainasset.com/*

• Block or redirect requests by rules it declares in advance declarativeNetRequest
• Run its own code on the pages it can access scripting
• Schedule work to run later alarms

The full permission history for this extension →

The publisher

SentSonar.

Like this one

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

1. Zestmail — Email Tracking for Gmail Describes nearly the same job, smaller audience 5 users (last published figure) Compare side by side
2. MailTraceX — Email Tracker & Read Receipts for Gmail Describes nearly the same job, smaller audience 57 users ★ 5.0 Compare side by side
3. Email Open Tracker – Unlimited Real-Time Gmail Read Receipts & Tracking Describes nearly the same job, smaller audience 230 users ★ 4.7 Compare side by side
4. Seenly — Email Open Tracker Describes nearly the same job, smaller audience 7 users ★ 5.0 Compare side by side
5. EmailTrackApp — Email Tracking & Read Receipts for Gmail Describes nearly the same job, smaller audience 61 users ★ 5.0 Compare side by side

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.