Dev tools · alternatives · 2026
24 alternatives to MailCue
Run as a fully hardened production email server.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.
- 1AF
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 →
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MailSnag▲83Automated email testing for dev/staging/QA/CI environments
2018 · mailsnag.com · its alternatives →
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Preview, analyze & test emails with one click
2022 · inboxpirates.com · its alternatives →
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opensend.ccfree▲160The open source email platform that runs on your server
21d ago · opensend.cc · its alternatives →
- 5FS
2017 · develmail.com · its alternatives →
- 6WS
WildDuck is a scalable no-SPOF IMAP/POP3 mail server
2019 · wildduck.email · its alternatives →
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- 9PI
Full featured solution for your email server. Native implementation of the latest anti-spam methods, webmail and easy administration included.
2015 · poste.io · its alternatives →
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Everything you need to start sending newsletters, drip campaigns, transactional emails. Mailcoach is a fully featured email marketing platform built for growing creators, developers, and businesses.
2020 · mailcoach.app · its alternatives →
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Introducing Posthorn, a self hosted email gateway. One docker container (or Go binary) between every self hosted app on your VPS and your transactional email provider. Set up Posthorn once, point your apps to it, done. I was trying to deploy Ghost on a DigitalOcean droplet and found that DO and many different VPS services have started to block the default SMTP ports to try to combat the various types of abuse they get. To actually configure my app, I had to hack together a Postfix relay. In another project, I had a static site which had a contact form, but my free Formspree account was…
May 2026 · github.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 →
- 15
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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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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Mailcheap▲123Email hosting, dedicated email servers, API-first platform
2018 · mailcheap.co · its alternatives →
- 18
One address in: breaches, social accounts, DNS and open-web findings fanned into one identity graph. 75 email-OSINT modules, every finding sourced.
16d ago · mailaccess.pro · its alternatives →
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💌 Build and send emails using React. Contribute to resend/react-email development by creating an account on GitHub.
Apr 2026 · react.email · its alternatives →
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MailDrop.dev▲67Catch all email for developers and QAs, with subdomains
2023 · maildrop.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 →