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CLUSTER WHEN-EMAIL-EMAILS · 11 ENTRIES · EARLIEST ENTRY 2012-07-26

Email open tracking apps

This cluster consists of email tracking tools that notify senders when recipients open their messages, often using invisible pixels and providing details like time, location, and device. The dated entries are sparse, appearing in 2012, 2019, and 2025, with no clear pattern. Traction leaders, all with zero stars, are Titan Email: Contacts,Calendar, email-tracker, and mail-tracker.

Entry timeline

ENTRY TIMELINE

JUL 2012: 1NOV 2019: 1DEC 2019: 1FEB 2025: 1JUN 2025: 1JAN 2026: 1AUG 2026: 2SEP 2026: 3
JUL 2012SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 2 hand-coded · 9 unlabelled

Operator · 4 hobby · 1 indie · 4 commercial · 2 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 11 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01commitmentos0★18 dayslivehobbyApp that detects commitments in email, tracks them to deadlines computed from message wording, and sends reminders and follow-up suggestions until resolved.
  2. 02Titan Email: Contacts,Calendar0★21 dayslivecommercialMobile mail app for Titan customers that tracks opens, unsends messages, and manages multiple mailboxes and calendars.
  3. 03outlook-tracker0★25 days—Email tracker that monitors Microsoft Outlook messages and reports opens or link clicks.
  4. 04sotto0★17 dayslivehand-codedindieOpen-source Gmail triage app that labels unsolicited sales emails and leaves uncertain messages in the inbox, with reasons and undo for every move.
  5. 05iTrackMail - Email Tracking0★1 molivecommercialMobile app that tracks when recipients open sent emails and notifies the sender with time, location, platform, and browser details.
  6. 06Email Tracker - Email Tracking0★22 dayslivecommercialEmail tracking app that alerts users when their emails are opened and shows read counts, timing, and location for Gmail and Outlook messages.
  7. 07Mailtrack: Email Read Receipts0★17 daysliveEmail tracking app that notifies senders when their messages are opened and read.
  8. 08email-tracker0★2 molivehobbyChrome extension that tracks when Gmail emails are opened by injecting tracking pixels and notifying senders with open counts and details.
  9. 09mail-tracker0★2 mo—hobbyEmail tracking service that records opens and clicks in outbound email campaigns and displays real-time engagement analytics.
  10. 10mailed00★1 yrabandonedlivehobbyEmail tracking app that injects invisible pixels into Gmail messages and provides real-time analytics on opens, devices, and locations with AI categorization.
  11. 11Email Tracker by EmailHawk0★6 yrabandonedlivehand-codedcommercialEmail tracking app that sends push notifications when sent emails are opened and shows recipient location and device.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.