Dev tools · alternatives · 2026
24 alternatives to Mail-Dev
Local SMTP Server For Email Testing/Debugging
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mail-Dev launched in 2021; newer entries below may have overtaken it.
- 1
MailCue▲82Run as a fully hardened production email server.
Apr 2026 · olib-ai.github.io · its alternatives →
- 2AF
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 →
- 3
SMTP Debug Tool▲346Test and debug your SMTP connection, quickly and for free
2023 · smtpdebug.com · its alternatives →
- 4FS
2017 · develmail.com · its alternatives →
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SMTP‑Test.com▲103One‑click SMTP server test with real‑time protocol logs
2025 · smtp-test.com · its alternatives →
- 7
💌 Build and send emails using React. Contribute to resend/react-email development by creating an account on GitHub.
Apr 2026 · react.email · its alternatives →
- 8
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 →
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MailSnag▲83Automated email testing for dev/staging/QA/CI environments
2018 · mailsnag.com · its alternatives →
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A local SMTP server for testing your email implementations
2023 · apps.vecode.net · its alternatives →
- 13WS
WildDuck is a scalable no-SPOF IMAP/POP3 mail server
2019 · wildduck.email · its alternatives →
- 14
Microservice based mail client built with ReactJS and Spring
2019 · github.com · its alternatives →
- 15
TestSubject▲133Test how your email subject line displays on mobile devices.
2016 · zurb.com · its alternatives →
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Build, test, send emails with React. Contribute to sofn-xyz/mailing development by creating an account on GitHub.
2022 · github.com · its alternatives →
- 18
MailDev▲5SMTP Server + Web Interface for viewing and testing emails
2018 · bandarvic855.com · its alternatives →
- 19
A fast and free, online way to send a test email
2022 · sendtestemail.com · its alternatives →
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SMTP server & email API embed in an intuitive interface
2020 · tipimail.com · its alternatives →
- 22
Mailnest▲100Sandbox Email testing tool for IT product, service companies
2020 · mailnest.io · its alternatives →
- 23
I've spent the last few months working on something I wish I'd had years ago. I kept running into the same issue: CI green, production mail broken. TLS handshake failures, DKIM alignment mismatches, SPF soft-fails ... the stuff that only surfaces when real mail servers are involved. Most test tools (Mailpit, MailHog) are catch-alls. They confirm "an email was sent" but don't validate the protocol. They also aren't designed for network-exposed environments: no auth, unprotected Web UI, easy to enumerate messages. VaultSandbox is my attempt at fixing that. It's a self-hosted SMTP gateway…
Jan 2026 · vaultsandbox.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 →