안전한 메일 수신확인

What it can reach

Specific sites only: 2 match patterns.

• https://script.google.com/*
• https://script.googleusercontent.com/*

• Store data in your browser storage

The full permission history for this extension →

The publisher

INU publishes 6 listings we track, 91 users between them.

1. 다크보드 Pro INU · Productivity · Tools · published 2026-05-26 50 users
2. 영타 변환기 (ㅈㅈㅈ -> www) INU · Productivity · Tools · published 2026-05-15 13 users
3. 다담아 INU · Productivity · Tools · published 2026-05-16 9 users

Like this one

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

1. Seenbird 씬버드 – Gmail 이메일 수신/열람 확인 Describes nearly the same job, smaller audience 1 user
2. Mailshu - Email Open Signals Describes nearly the same job, smaller audience 22 users
3. Railgun Pixel — Email Tracking, Both Ways Describes nearly the same job, smaller audience 2 users
4. GmailTrack - 100% Free Email Tracker Describes nearly the same job, smaller audience 5 users ★ 5.0
5. Vidi — Email Read Receipts Describes nearly the same job, smaller audience 27 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.