Dev tools · alternatives · 2026
24 alternatives to MailFrom.dev – A sandbox SMTP for devs
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…
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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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 →
- 3FS
2017 · develmail.com · 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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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 →
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Sidemail 2.0▲306Hi all! I'm Kristyna, maker of Sidemail. I'd love to share with you what we've been building. We built Sidemail because sending emails from a SaaS app was way harder than it should be. Sidemail is made for developers and teams that want one simple place to handle SaaS emails with reliable delivery and no bloat. It has: - Everything for creating, managing and delivering SaaS emails in one platform, - Easy-to-use email API for sending password resets, receipts, etc. - Messenger for writing product updates and newsletters, - Email automations for onboarding and lifecycle flows, - Fast email…
Nov 2025 · sidemail.io · its alternatives →
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Mailtrap.io▲125Fake SMTP. Send Test Emails without spamming real customers
2014 · mailtrap.io · its alternatives →
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SMTP Debug Tool▲346Test and debug your SMTP connection, quickly and for free
2023 · smtpdebug.com · its alternatives →
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The collaborative email testing platform for modern teams
Dec 2025 · mailsandbox.com · its alternatives →
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SendPit▲2SMTP sandbox for email testing for developers and QA teams!
Feb 2026 · sendpit.com · its alternatives →
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Hello Inbox▲283Hey HN, I built an email deliverability SaaS with a RAG system. It's trained on all my knowledge and hundreds of real deliverability use cases from 4+ years experience as an Email Deliverability Specialist on Upwork. It solves a frustration problem a lot of businesses are experiencing. I'm looking for feedback so let me know in the comments.
Aug 2026 · helloinbox.email · its alternatives →
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MailCue▲82Run as a fully hardened production email server.
Apr 2026 · olib-ai.github.io · its alternatives →
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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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Mailnest▲100Sandbox Email testing tool for IT product, service companies
2020 · mailnest.io · 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 →
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AhaSend▲132I'm the founder of AhaSend. We've built a transactional email service specifically for developers, with a Pay-As-You-Go pricing model ($0.50 per 1,000 emails) and up to 70% volume discount for platform partners. While there are many ESPs out there, we focused heavily on the Developer Experience to solve the pain of building and testing email flows: * The CLI: Heavily inspired by the Stripe CLI, we built a tool that lets you develop and debug locally. You can listen to webhooks, trigger events, manage your domains, and send / list / debug messages directly from your terminal. * True…
2024 · ahasend.com · 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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- 23OS
Hey HN, I've been working on an email client and wanted to get some feedback! Minimail is built on Phonegap, so it uses HTML/CSS/JS for everything user-facing. The app also uses emailbox (a related project of mine) as the backend API for receiving/parsing/sending emails. I think email clients need a huge UX/UI overhaul, and so I'm trying to build a flexible/hackable email client that anyone can customize to fit their email workflow. Thanks for any feedback! Website: https://minimail.herokuapp.com/ Email: nick (at) getemailbox.com
2013 · minimail.herokuapp.com · its alternatives →
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I built Sniffmail because I was tired of fake and disposable emails getting through signup forms on every project I shipped. It verifies email addresses at the SMTP level without sending an email. One API call returns whether the mailbox exists, is disposable, has a full inbox, or is a catch-all domain. Install with npm install sniffmail, call validateEmail("[email protected]"), get a verdict. REST API available for non-Node stacks. What it checks: SMTP mailbox existence (connects to the mail server, confirms the address is real), disposable/temporary email detection (Mailinator, 10…
Mar 2026 · sniffmail.io · 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 →