Growth · alternatives · 2026

24 alternatives to Mailsbe

Find out if your email has been read or not

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mailsbe launched in 2022; newer entries below may have overtaken it.

1. 1
   Mailook▲309

   Identify & fix your email deliverability issues for free

   2021 · mailook.ai · its alternatives →

2. 2
   Mail Tester▲309

   Test the spamminess of your email

   2016 · mail-tester.com · its alternatives →

3. 3
   Have I Been Sold?▲438

   Check if your email address was sold without permission

   2018 · its alternatives →

4. 4
   Anymail finder▲629

   Quickly find anyone's email at any company

   2015 · anymailfinder.com · its alternatives →

5. 5IM
   I made an app to buffer and complete my "read later" list▲53

   2021 · closetab.email · its alternatives →

6. 6
   Mailbob▲255

   A newsletter platform for personal brands/small businesses

   2024 · mailbob.io · its alternatives →

7. 7
   Debug Mail▲194

   Easy-to-use mail server for developers

   2022 · debugmail.io · its alternatives →

8. 8
   SONAR - An Email Tracker for Gmail▲66

   See when your emails are read, every time

   2022 · getsonar.co · its alternatives →

9. 9
   PromoTab▲154

   Check on which Gmail tab your email will land

   2021 · its alternatives →

10. 10
    Mailtrack.io▲282

    The best email tracking solution I've found. Free

    2014 · mailsuite.com · its alternatives →

11. 11
    MailDump▲270

    Find, extract and verify emails automatically

    2018 · maildump.co · its alternatives →

12. 12
    LaterMail▲100

    Read email newsletters on your schedule, not theirs

    2021 · dev7studios.co · its alternatives →

13. 13
    TraceMail▲100

    Know, don't guess when your emails are read

    2024 · its alternatives →

14. 14
    Mail Track▲168

    Gmail extension to track when your emails are opened

    2023 · mailtrack.email · its alternatives →

15. 15
    Data Breach Checker▲101

    Check if your email address was compromised

    2020 · burnermail.io · its alternatives →

16. 16SI
    See if someone reads your emails▲6

    2011 · gotcha.io · its alternatives →

17. 17
    ContextSmith Free Email Tracker▲121

    Know when and where your emails are read

    2017 · chromewebstore.google.com · its alternatives →

18. 18
    EmailThis for Firefox▲72

    Turn your email inbox into your reading list.

    2017 · addons.mozilla.org · its alternatives →

19. 19
    Email Newsletter Checklist by MailSwift▲180

    Send error free emails that your customers will love

    2018 · oasiscity.io · its alternatives →

20. 20
    Mailhardener▲66

    Monitor and prevent email fraud

    2019 · mailhardener.com · its alternatives →

21. 21
    Spam Checker by Mailmeteor▲88

    Detect and remove spam words in your emails

    2022 · mailmeteor.com · its alternatives →

22. 22
    Email Spam Checker by Autoklose▲105

    Send spam-free, high-converting emails

    2020 · app.autoklose.com · its alternatives →

23. 23
    Free Email Verifier▲202

    The first free and accurate email verification service

    2020 · gmass.co · its alternatives →

24. 24
    Email Bounce Checker from BlockSurvey▲98

    Privacy-focused email bounce checker. No ads, no trackers.

    2022 · blocksurvey.io · 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 →