Dev tools · alternatives · 2026

24 alternatives to Legitmailbox

Email Verification API with monthly reports

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Legitmailbox launched in 2021; newer entries below may have overtaken it.

1. 1
   Email Verify API▲92

   Simple email validation API for a $39 lifetime license

   2021 · cloudlyn.com · its alternatives →

2. 2
   Proofy▲181

   Quickly validate and verify your email lists.

   2016 · proofy.io · its alternatives →

3. 3
   SmartEmailCheck▲9

   Smarter Email Validation—Built for Modern Apps.

   Nov 2025 · smartemailcheck.com · its alternatives →

4. 4
   Free Email Verifier▲202

   The first free and accurate email verification service

   2020 · gmass.co · its alternatives →

5. 5
   VerifyRight▲5

   Catch fake emails before they signup

   2025 · verifyright.io · its alternatives →

6. 6
   Email Validator API ▲7

   It tells you if a Email is valid or not

   2025 · thirsty-melisse-hardcode-c2fce731.koyeb.app · its alternatives →

7. 7
   MailCheck▲49

   Stop Free Trial Abuse with Advanced Email Verification

   2025 · mail-check.tech · its alternatives →

8. 8
   Mailerio▲30

   Keep your lists clean with email validation tool

   2025 · mailerio.com · its alternatives →

9. 9
   MailCheck AI▲1

   AI-powered Email Verification API on RapidAPI

   2025 · rapidapi.com · its alternatives →

10. 10
    Email Verification API▲4

    Real-time and convenient email validation tool

    2021 · emailverification.whoisxmlapi.com · its alternatives →

11. 11
    TrueMailer▲2

    Professional Email Validation API | Truemailer

    2025 · truemailer.strivio.world · its alternatives →

12. 12
    Real-time email validation JS Widget▲30

    Verify an email address typed in your form in real-time

    2020 · app.thechecker.co · its alternatives →

13. 13
    Totus Email Validation API▲5

    Stop Bounced Emails Killing You Business, Get Real Users

    2025 · gototus.com · its alternatives →

14. 14
    Email Validator API▲8

    This is an easy way to check email addresses

    2020 · its alternatives →

15. 15
    verifi.email▲14

    Instant & Effortless Email Validation using Zapier

    2025 · verifi.email · its alternatives →

16. 16
    EasyEmailAPI▲7

    Reliable email verification for SaaS & startups

    Feb 2026 · easyemailapi.com · its alternatives →

17. 17
    Rapid Email Validator 2025▲13

    Privacy-first free email verifier | no storage | open source

    2025 · rapid-email-verifier.fly.dev · its alternatives →

18. 18
    Blaze Verify▲13

    Send emails to real people. Email Verification Platform.

    2019 · emailable.com · its alternatives →

19. 19
    Email Validation & Scoring API▲2

    Validate Emails Instantly - Smart Scoring & Security

    Nov 2025 · rapidapi.com · its alternatives →

20. 20
    emailstuff.io▲14

    Reliable email validation for clean lists and deliverability

    2025 · emailstuff.io · its alternatives →

21. 21
    BounceStrike▲14

    AI-powered real-time email verification API, cheaper price

    2025 · bouncestrike.com · its alternatives →

22. 22
    Official Email Validator▲1

    Validate emails with real-time, deep SMTP checks.

    2025 · rapidapi.com · its alternatives →

23. 23
    mailboxlayer▲3

    Email Validation & Verification JSON API for Developers

    2021 · mailboxlayer.com · its alternatives →

24. 24
    EmailKit▲7

    Email validation api

    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 →