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 · its alternatives →
- 4
- 5
SMTP‑Test.com▲103One‑click SMTP server test with real‑time protocol logs
2025 · smtp-test.com · its alternatives →
- 6
- 7
Easily test emails. No real delivery. No complex setups.
2025 · its alternatives →
- 8
- 9
- 10
An open-source email editor you can embed in your own app
Apr 2026 · react.email · its alternatives →
- 11
- 12
Microservice based mail client built with ReactJS and Spring
2019 · its alternatives →
- 13FS
2017 · develmail.com · its alternatives →
- 14
- 15WS
2019 · wildduck.email · its alternatives →
- 16IM
Hi all! Excited to share cc.dev after months of work and refinement. The idea for this product came from trying to do email marketing for my side project, CubeDesk, a site where Rubik's Cube enthusiasts can time themselves, race with one another, train algorithms — it's a fun niche! With over 40k users, sending even a single campaign was becoming expensive with MailChimp. I knew AWS SES would be much cheaper, but it’s just an API with none of the other necessities you need for a robust email marketing platform. Beyond cost, I was also frustrated with having to make sure my database was…
2023 · cc.dev · its alternatives →
- 17
Decoy▲99Local server mocks in macOS, all in a lightweight native app
Mar 2026 · decoy-app.com · its alternatives →
- 18
- 19
Build, customize, and ship emails — all from your own app
Apr 2026 · resend.com · its alternatives →
- 20
- 21VT
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 →
- 22CE
2020 · saasbase.dev · its alternatives →
- 23RC
2020 · github.com · its alternatives →
- 24
InboxTap▲3Test email flows locally, without risking real inboxes
Jul 2026 · inboxtap.dev · 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 →