Growth · alternatives · 2026

24 alternatives to MailSlurp

End-to-end email testing made easy

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. MailSlurp launched in 2018; newer entries below may have overtaken it.

1
MailSlurp▲133
Test, build & automate email and SMS
2024 · mailslurp.com · its alternatives →
2
Mail Tester▲309
Test the spamminess of your email
2016 · mail-tester.com · its alternatives →
3AF
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 →
4
Mailtrap.io▲125
Fake SMTP. Send Test Emails without spamming real customers
2014 · mailtrap.io · its alternatives →
5
Send Test Email▲80
A fast and free, online way to send a test email
2022 · sendtestemail.com · its alternatives →
6FS
Fake SMTP server as a service▲149
2017 · develmail.com · its alternatives →
7
MailGuru▲79
A fast & free, bulk email tester
2023 · its alternatives →
8IB
I built Mailhub – A scalable API for sending emails with ease not tears▲104
2024 · mailhub.sh · its alternatives →
9
MailDump▲270
Find, extract and verify emails automatically
2018 · maildump.co · its alternatives →
10
SMTP‑Test.com▲103
One‑click SMTP server test with real‑time protocol logs
2025 · smtp-test.com · its alternatives →
11
Mailnest▲100
Sandbox Email testing tool for IT product, service companies
2020 · mailnest.io · its alternatives →
12
EasyEmail▲227
Gmail plug-in that helps you write emails quickly
2018 · easyemail.ai · its alternatives →
13
Proofy▲181
Quickly validate and verify your email lists.
2016 · proofy.io · its alternatives →
14
Hide My Email - Open Source Extension▲114
Use unique, random addresses when signing up for websites.
2025 · github.com · its alternatives →
15
PutsMail▲195
Test your HTML emails before sending them
2015 · putsmail.com · its alternatives →
16
EmailTest.com▲149
World's easiest spam testing and email rendering service
2017 · its alternatives →
17
Maildown – Super Simple Email API▲98
A super simple CLI for sending emails. Contribute to chris104957/maildown development by creating an account on GitHub.
2019 · github.com · its alternatives →
18
MailSnag▲83
Automated email testing for dev/staging/QA/CI environments
2018 · mailsnag.com · its alternatives →
19MS
Maildown – super simple email API▲40
2020 · maildown.dev · its alternatives →
20
MailTrap▲5
Safe Email Testing for Staging & Development
2019 · mailtrap.io · its alternatives →
21MM
Maildown – Markdown email campaigns▲92
Hi, The beta program of my new startup, Maildown, is now complete and is now accepting paying customers: https://www.maildown.app As well as a lot of stability enhancements, we've added a new help system, a new CLI (https://github.com/chris104957/mailer-cli) and a REST API. Maildown lets you create transactional and marketing email campaigns using Markdown syntax, so you can generate and send your email content far more quickly than with traditional WYSIWYG editors. Thanks for looking, Chris
2019 · its alternatives →
22
Mailie▲73
Sharing emails made possible
2022 · its alternatives →
23TY
Test your E-Mail for IP Leaks▲50
E-Mail IP Leak Test is a free tool for the internet allowing end users to test their e-mail provider
2013 · emailipleaktest.com · its alternatives →
24
MailTumble▲79
URL shorteners for emails
2021 · app.mailtumble.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 →