Growth · alternatives · 2026

24 alternatives to MailCatch

A local SMTP server for testing your email implementations

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. MailCatch launched in 2023; newer entries below may have overtaken it.

1AF
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 · its alternatives →
2
SMTP‑Test.com▲103
One‑click SMTP server test with real‑time protocol logs
2025 · smtp-test.com · its alternatives →
3
MailSnag▲83
Automated email testing for dev/staging/QA/CI environments
2018 · mailsnag.com · its alternatives →
4FS
Fake SMTP server as a service▲149
2017 · develmail.com · its alternatives →
5
MailSlurp▲103
End-to-end email testing made easy
2018 · mailslurp.com · its alternatives →
6
Mail-Dev▲5
Local SMTP Server For Email Testing/Debugging
2021 · github.com · its alternatives →
7
Mail Tester▲309
Test the spamminess of your email
2016 · mail-tester.com · its alternatives →
8
Send Test Email▲80
A fast and free, online way to send a test email
2022 · sendtestemail.com · its alternatives →
9
Mailcatch.app▲25
Testing emails has never been easier
2023 · mailcatch.app · its alternatives →
10
SMTP Debug Tool▲346
Test and debug your SMTP connection, quickly and for free
2023 · smtpdebug.com · its alternatives →
11
MailCue▲82
Run as a fully hardened production email server.
Apr 2026 · olib-ai.github.io · its alternatives →
12
Mailsnag▲31
Seamless Email Testing and Receiving
2024 · mailsnag.com · its alternatives →
13
Debug Mail▲194
Easy-to-use mail server for developers
2022 · debugmail.io · its alternatives →
14
Mailcheap▲123
Email hosting, dedicated email servers, API-first platform
2018 · mailcheap.co · its alternatives →
15
Mailnest▲100
Sandbox Email testing tool for IT product, service companies
2020 · mailnest.io · its alternatives →
16
PutsMail▲195
Test your HTML emails before sending them
2015 · putsmail.com · its alternatives →
17
MailSlurp▲133
Test, build & automate email and SMS
2024 · mailslurp.com · its alternatives →
18
EmailTest.com▲149
World's easiest spam testing and email rendering service
2017 · its alternatives →
19
Vetter▲134
Test if your emails will be spammed, using real accounts.
2020 · vetter.monsoonyeti.com · its alternatives →
20
Free SMTP Server Test Tool▲2
Check & verify email server online.
2025 · smtpprovider.com · its alternatives →
21
Mailtrap.io▲125
Fake SMTP. Send Test Emails without spamming real customers
2014 · mailtrap.io · its alternatives →
22
SmtpMan▲1
Safe Email Testing for Staging & Development
2020 · smtpman.com · its alternatives →
23
MailFrom.dev – A sandbox SMTP for devs▲17
Hi HN, Two months ago, we launched MailFrom.dev, a fake SMTP server for developers who want to test email sending without hitting real inboxes – think of it like a simpler, cheaper alternative to Mailtrap or Mailhog with a focus on ease of use. Since then: - We’ve had 55 developers sign up with 4 paid subscription active and 821 test emails sent - Improved stability, speed, and small features our early users needed - Worked hard to add roles (wich will be released later next week) What's improved: - Better UI to inspect headers, bodies, and attachments - Faster inbox refresh and sync between…
2025 · mailfrom.dev · its alternatives →
24
Dimamo▲85
Email addresses for testing
2022 · 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 →