Dev tools · alternatives · 2026

24 alternatives to EmailGuard API

Stop fake signups and burner emails before they hit your DB.

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
   Trueguard▲365

   Stop fake user signups

   2025 · trueguard.io · its alternatives →

2. 2
   Throttle▲463

   Stop giving out your email address

   2015 · throttlehq.com · its alternatives →

3. 3
   Burner Mail▲295

   Stop giving away your personal information

   2018 · chromewebstore.google.com · its alternatives →

4. 4
   lockrMail▲195

   Own the power to organize and protect your email inbox

   2021 · app.lockrmail.com · its alternatives →

5. 5
   Mailguard▲3

   Email verification API with a free tier, up to 100x cheaper

   Jun 2026 · mailguard-api.atek.workers.dev · its alternatives →

6. 6
   I hate mailto▲399

   Stop websites from opening your email client.

   2019 · ihatemailto.com · its alternatives →

7. 7
   Checker▲124

   Detect fake signups in under 200ms with an easy-to-use API

   2025 · its alternatives →

8. 8
   AgreeGuard▲90

   AI reads the fine print before you click "I Agree"

   Mar 2026 · agreeguard.app · its alternatives →

9. 9
   Free API to block disposable emails▲19

   Block disposable emails with our API. Start for free today.

   2017 · validator.pizza · its alternatives →

10. 10
    Gblock▲107

    Block email tracking in Gmail

    2025 · gblock.app · its alternatives →

11. 11
    TrustyMails▲78

    Free API to block disposable emails - say goodbye to fraud

    2023 · trustymails.com · its alternatives →

12. 12
    MimicAI▲9

    AI phishing defence for Gmail, without blocking your emails

    2024 · its alternatives →

13. 13
    reCAPTCHA Mailhide▲84

    Solution to protect email addresses by Google

    2014 · accounts.google.com · its alternatives →

14. 14
    Mailhardener▲66

    Monitor and prevent email fraud

    2019 · mailhardener.com · its alternatives →

15. 15
    MailCheck▲49

    Stop Free Trial Abuse with Advanced Email Verification

    2025 · mail-check.tech · its alternatives →

16. 16
    EGUARD▲3

    After seeing sophisticated phishing attempts slip through Gmail's filters, a friend and I built a browser extension that uses local AI to analyse emails for threats. It runs entirely in your browser using web-llm, with any threat being clearly labelled with an explanation of why it's suspicious. Still early days, but we'd love feedback from the HN community. Even if you're not comfortable installing it yet, we have screenshots showing how it works. https://www.eguard.app https://chromewebstore.google.com/detail/eguard/dnpofinmilhb...

    2025 · chromewebstore.google.com · its alternatives →

17. 17
    Ninja▲18

    Prevent your email address from being sold 🙈

    2018 · its alternatives →

18. 18
    Gmail Email Guard▲8

    Enterprise-grade phishing protection, no IT team required.

    Sep 2026 · cybercheck360.com · its alternatives →

19. 19
    PixelBlock – A Gmail extension that blocks email tracking▲47

    2014 · chrome.google.com · its alternatives →

20. 20
    CheckMailPro▲8

    Block fake/temp emails

    2024 · its alternatives →

21. 21
    mxHero▲58

    Supercharge your email. [free chrome extension]

    2014 · mxhero.com · its alternatives →

22. 22
    DomainGuard▲3

    Stop employees logging into SaaS with personal emails

    Apr 2026 · domainguard.co · its alternatives →

23. 23
    Mailsurity▲1

    Catch the fake Emails your blocklist lets through.

    Jul 2026 · mailsurity.com · its alternatives →

24. 24
    PhishGuard▲17

    Detect Phishing Emails with AI-Powered Confidence 🚀

    2024 · 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 →