Growth · alternatives · 2026

24 alternatives to Free Spam Detector

Multi-language Email spam check tool

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Spam Check▲93

   A free JSON API to check your email messages' spam scores

   2015 · its alternatives →

2. 2
   Spam Checker by Mailmeteor▲88

   Detect and remove spam words in your emails

   2022 · its alternatives →

3. 3
   Unspam.email▲309

   Email spam checker and newsletter heatmap prediction.

   2020 · its alternatives →

4. 4
   Warmup Inbox▲204

   Free email spam checker & inbox placement tester

   2023 · its alternatives →

5. 5
   Email Spam Checker by Autoklose▲105

   Send spam-free, high-converting emails

   2020 · its alternatives →

6. 6
   Unspam AI▲385

   See how your subscribers read your emails with our AI inbox

   2024 · its alternatives →

7. 7
   analyze.email▲136

   Test the spam-y-ness of your emails

   2017 · its alternatives →

8. 8
   Grade My Email▲145

   Helps you get out of the spam folder.

   2020 · its alternatives →

9. 9
   You've Got Spam▲309

   A new tool that lets you spam back the spammer

   2020 · its alternatives →

10. 10
    mailX by mailwarm▲602

    Email deliverability toolkit for humans and AI agents

    May 2026 · themailx.com · its alternatives →

11. 11
    Mail Tester▲307

    Test the spamminess of your email

    2016 · its alternatives →

12. 12
    Vetter▲134

    Test if your emails will be spammed, using real accounts.

    2020 · its alternatives →

13. 13
    Mailook▲315

    Identify & fix your email deliverability issues for free

    2021 · its alternatives →

14. 14
    SellScale Email Grader▲117

    Get instant feedback on your sales emails

    2024 · its alternatives →

15. 15
    EmailTest.com▲149

    World's easiest spam testing and email rendering service

    2017 · its alternatives →

16. 16
    SpamSieve▲71

    Add powerful spam filtering to your Mac’s e-mail client

    2018 · its alternatives →

17. 17
    Email Bounce Checker from BlockSurvey▲98

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

    2022 · its alternatives →

18. 18
    Spam-Detecting AI by OpenAI▲73

    Spam detection in the physical world

    2017 · its alternatives →

19. 19
    Spam Risk Checker▲4

    Avoid spammy outreach

    Jul 2026 · rankforte.com · its alternatives →

20. 20
    MailLinter▲9

    AI Email Testing Tool | Spam, Accessibility & Compatibility

    Jan 2026 · maillinter.com · its alternatives →

21. 21
    SpamCheck.ai▲5

    Advanced Spam Detection: Secure Your Content Now!

    2024 · its alternatives →

22. 22
    SEOCheckr▲19

    Free website seo checker & analysis tool

    2025 · its alternatives →

23. 23
    MailTested▲7

    Check why your emails go to spam — instantly.

    Nov 2025 · mailtested.com · its alternatives →

24. 24
    Email Inspect▲9

    Free dmarc, spf & dkim analyzer tools

    Nov 2025 · emailinspect.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 →