Growth · alternatives · 2026

24 alternatives to mails.so

mails.so — Unbeatably simple email validation

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. mails.so launched in 2024; newer entries below may have overtaken it.

1
Free Email Verifier▲202
The first free and accurate email verification service
2020 · gmass.co · its alternatives →
2
Email Verify API▲92
Simple email validation API for a $39 lifetime license
2021 · cloudlyn.com · its alternatives →
3
Validate Email – 100% Free & Private▲28
Instant Email Verification – Real, Reachable & Secure
2025 · validate.email · its alternatives →
4
Email Validator API▲8
This is an easy way to check email addresses
2020 · its alternatives →
5
Bulk Email Verifier & Checker▲115
The top tool for checking mail address authenticity
2023 · email-verifier.convertinsight.com · its alternatives →
6
Proofy▲181
Quickly validate and verify your email lists.
2016 · proofy.io · its alternatives →
7
Self host Email Validation▲51
Cleanmails - Unlimited email verification
Jan 2026 · its alternatives →
8
Email Validator API ▲7
It tells you if a Email is valid or not
2025 · thirsty-melisse-hardcode-c2fce731.koyeb.app · its alternatives →
9
EmailAddress.ai▲9
Verify Catch-all Emails with confidence
2025 · emailaddress.ai · its alternatives →
10
EmailListVerify▲35
Find and validate email address for half the price
2024 · emaillistverify.com · its alternatives →
11
MailCheck▲49
Stop Free Trial Abuse with Advanced Email Verification
2025 · mail-check.tech · its alternatives →
12
is-valid.email▲7
is-valid.email - professional email verification service
2024 · its alternatives →
13
Lero - Email Validator▲118
Zero bounce for founders
2025 · leromail.com · its alternatives →
14
Validemail.co▲5
Simple & fast email validation for everyone
2025 · validemail.co · its alternatives →
15CW
Check whether an email address exists▲12
2018 · email.universlabs.co.uk · its alternatives →
16
BounceBan▲123
Unlimited free email verify, works great for accept-all
2022 · bounceban.com · its alternatives →
17
Free email checker▲2
Find out whether an email address is valid or not!
2024 · its alternatives →
18
SmartEmailCheck▲9
Smarter Email Validation—Built for Modern Apps.
Nov 2025 · smartemailcheck.com · its alternatives →
19
Email Validator by Sidemail▲16
Hi HN – Kristyna here. I built this free, online email validator and would love to share it with you. What it checks: - Syntax – Confirms correct proper email format. - Domain & DNS – Verifies the domain exists and resolves. - MX records – Verifies the domain can receive mail. - SMTP handshake (optional) – Checks the mail server accepts the recipient (no message is sent). - Disposable domains – Flags temporary inbox providers that can hurt deliverability lists. - Common typos – Catches mistakes and suggests fixes. How it works: Paste an email > click Validate > get a clear result with…
Feb 2026 · sidemail.io · its alternatives →
20
EmailToCheck▲5
Free email verification tool
2024 · emailtocheck.netlify.app · its alternatives →
21
Free Email Validator - Full Source Code▲6
Cold Email Validation Tool with Full Source Code
Nov 2025 · its alternatives →
22
Email Checker - Easy Email Verification▲8
Email Checker that reduces bounces instantly
2025 · easyemailverification.com · its alternatives →
23
Email Finder by Truelist▲19
Find anyone's work email — verified, not guessed
Jul 2026 · truelist.io · its alternatives →
24
Weblegit Email Validation Service▲72
A real customer starts with a real email
2017 · weblegit.com · its alternatives →

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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 →