Alternatives

Products that do what CheckMail1 does

Real-time email verifier that checks if Gmail & iCloud exist

1. 1
   Free Email Verifier▲202

   The first free and accurate email verification service

   2020

2. 2
   Bulk Email Verifier & Checker▲115

   The top tool for checking mail address authenticity

   2023

3. 3
   KleanMail Free Email Verifier▲177

   Emails inboxed, always.

   2022

4. 4
   Clearout 2.0▲103

   98%+ accurate real-time & bulk email verification services

   2020

5. 5
   SMTP‑Test.com▲103

   One‑click SMTP server test with real‑time protocol logs

   2025

6. 6
   Bulk Email Verifier▲78

   Validates email addresses, checks deliverability

   2022

7. 7
   Email Verifier▲50

   Verify your email list before you hit send

   Aug 2026 · mailercloud.com

8. 8
   Proofy▲181

   Quickly validate and verify your email lists.

   2016

9. 9
   Mailcheap▲123

   Email hosting, dedicated email servers, API-first platform

   2018

10. 10
    Email Verify API▲92

    Simple email validation API for a $39 lifetime license

    2021

11. 11
    Send Sleuth▲82

    Bulk validate emails in Google Sheets

    2022

12. 12
    Self host Email Validation▲51

    Cleanmails - Unlimited email verification

    Jan 2026

13. 13
    SMTP Email Verifier▲7

    Check email lists with syntax, MX, and SMTP verification

    Jun 2026 · apify.com

14. 14
    MailCheck▲49

    Stop Free Trial Abuse with Advanced Email Verification

    2025

15. 15
    Checker▲124

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

    2025

16. 16AF
    A fake SMTP server for software integration testing▲127

    This is a side project of mine. Use this as your SMTP server in a test environment to guarantee that your users don't receive test emails. Looking for feedback, especially on the security side.

    2024 · fakemail.stream

17. 17
    Sniffmail▲8

    Email verification API that catches fake signups

    Mar 2026 · sniffmail.io

18. 18
    Email Validator by Sidemail▲16

    Free email address validator (inc. SMTP deep check)

    Feb 2026

19. 19
    Mailerio▲30

    Keep your lists clean with email validation tool

    2025

20. 20
    Email Finder by Truelist▲19

    Find anyone's work email — verified, not guessed

    Jul 2026 · truelist.io

21. 21
    VerifiedEmail▲13

    Affordable, accurate email-verification tool

    Nov 2025

22. 22
    Free Email Verification Tool▲3

    Email checker. No signup required, paste and verify.

    Jul 2026 · probe.uspeedo.online

23. 23
    Mail Boiler▲1

    Email verification service | check if email address exists

    Dec 2025

24. 24
    Verifully▲17

    Your One Email Verification Platform to Replace them All

    20d ago · verifully.com

Ranked by how close each launch is in meaning, then by votes. Refine with a description →