Alternatives

Products that do what Mail Boiler does

Email verification service | check if email address exists

1. 1
   Free Email Verifier▲202

   The first free and accurate email verification service

   2020

2. 2
   Proofy▲181

   Quickly validate and verify your email lists.

   2016

3. 3
   Bulk Email Verifier & Checker▲115

   The top tool for checking mail address authenticity

   2023

4. 4
   Clearout 2.0▲103

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

   2020

5. 5
   Generect Email Finder▲480

   Verify and validate emails at scale

   2024

6. 6
   Weecheck v2▲100

   Simple email verification to improve deliverability

   2022

7. 7
   MailCheck▲49

   Stop Free Trial Abuse with Advanced Email Verification

   2025

8. 8
   KleanMail Free Email Verifier▲177

   Emails inboxed, always.

   2022

9. 9
   Weecheck▲120

   Validate email addresses and avoid bounces

   2021

10. 10
    Trumail▲215

    Free email verification API

    2017

11. 11
    CheckMail1▲4

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

    Jul 2026 · checkmail1.com

12. 12
    Email Verify API▲92

    Simple email validation API for a $39 lifetime license

    2021

13. 13
    Bulk Email Verifier▲78

    Validates email addresses, checks deliverability

    2022

14. 14
    MailSnag▲83

    Automated email testing for dev/staging/QA/CI environments

    2018

15. 15
    Mailerio▲30

    Keep your lists clean with email validation tool

    2025

16. 16
    Sniffmail▲8

    Email verification API that catches fake signups

    Mar 2026 · sniffmail.io

17. 17
    Bulk Email Validation▲80

    Clean your existing email lists with mailbox verification

    2019

18. 18
    Email Bounce Checker from BlockSurvey▲98

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

    2022

19. 19AF
    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

20. 20
    Email Checker - Easy Email Verification▲8

    Email Checker that reduces bounces instantly

    Oct 2025

21. 21
    BounceBan▲123

    Unlimited free email verify, works great for accept-all

    2022

22. 22
    EmailAwesome▲39

    Validate emails, less bounces & spam reports for 10X less

    2024

23. 23
    Scrubby▲42

    Complete risky email validation tool with 98% accuracy

    2025

24. 24
    Self host Email Validation▲51

    Cleanmails - Unlimited email verification

    Jan 2026

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