Growth · alternatives · 2026

24 alternatives to Mailcastr1

Email tracker app for Gmail and Inbox

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mailcastr1 launched in 2017; newer entries below may have overtaken it.

1. 1
   Mailcastr▲363

   Create email signature that can track your emails

   2017 · bulletbusiness.com · its alternatives →

2. 2
   Inbox by Google▲1,147

   Next generation inbox

   2014 · google.com · its alternatives →

3. 3
   Unlimited Email Tracker▲496

   Track opens and clicks, set reminders and delays in Gmail

   2019 · snov.io · its alternatives →

4. 4
   Email Open Tracker for GMAIL▲126

   Keep an eye on your email opens

   2024 · its alternatives →

5. 5
   Mailtrack.io▲282

   The best email tracking solution I've found. Free

   2014 · mailsuite.com · its alternatives →

6. 6
   Mail Track▲168

   Gmail extension to track when your emails are opened

   2023 · mailtrack.email · its alternatives →

7. 7
   InboxPro▲174

   Boost your productivity & turn Gmail into a powerful machine

   2022 · inboxpro.io · its alternatives →

8. 8
   Inbox by Gmail Chrome Extension▲207

   Save links for later and share with one click

   2016 · chromewebstore.google.com · its alternatives →

9. 9
   SONAR - An Email Tracker for Gmail▲66

   See when your emails are read, every time

   2022 · getsonar.co · its alternatives →

10. 10
    Inboxer▲212

    A clean, open-source desktop client for Google Inbox 💌

    2018 · denysdovhan.com · its alternatives →

11. 11
    Mailmeteor▲567

    Send hundreds of personalized emails with Gmail.

    2019 · mailmeteor.com · its alternatives →

12. 12
    Gmail for Android ▲85

    Big Android update introducing a unified inbox

    2015 · play.google.com · its alternatives →

13. 13
    InboxVudu▲101

    Your intelligent assistant for Gmail & Google Apps

    2015 · its alternatives →

14. 14
    Doubletick for Gmail▲120

    Track email opens, know which emails are opened by recipient

    2021 · its alternatives →

15. 15
    Mailtracker▲78

    Mobile email tracking - Yesware for Mobile

    2014 · mailtrackerapp.com · its alternatives →

16. 16
    Mailburn▲216

    Turns Gmail into WhatsApp for work

    2015 · mailburn.com · its alternatives →

17. 17
    Live Mail▲110

    A clean, feature-packed Android email client

    2017 · play.google.com · its alternatives →

18. 18
    SlideMail▲97

    An email app that can think

    2015 · its alternatives →

19. 19
    Mail-Trail for Gmail▲74

    Auto-remind recipients about forgotten emails

    2014 · chromewebstore.google.com · its alternatives →

20. 20
    Mixmax for Google Inbox▲337

    The essential productivity suite (tracking, calendar & more)

    2015 · mixmax.com · its alternatives →

21. 21
    Gmailify▲139

    The power of Gmail for everyone else's email

    2016 · blog.google · its alternatives →

22. 22
    Yesware Mobile▲107

    Email Tracking in Gmail for Sales Productivity

    2014 · apps.apple.com · its alternatives →

23. 23
    WMail▲115

    OSX App for Google Inbox and Gmail

    2016 · github.com · its alternatives →

24. 24
    ContextSmith Free Email Tracker▲121

    Know when and where your emails are read

    2017 · chromewebstore.google.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →