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Alternatives

Products that do what MailFrom.dev – A sandbox SMTP for devs does

Easily test emails. No real delivery. No complex setups.

  1. 1
    DevMail183

    Email sandbox for software developers

    2024

  2. 2

    Easy-to-use mail server for developers

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  3. 3
    Resend1,326

    Email for developers

    2023 · resend.com

  4. 4

    Automated email testing for dev/staging/QA/CI environments

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  5. 5

    Test and debug your SMTP connection, quickly and for free

    2023

  6. 6AF

    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

  7. 7
    Zero845

    AI native email client

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  8. 8DE

    Devbox is a command-line tool that lets you easily create isolated shells and containers. You start by defining the list of packages required by your development environment, and devbox uses that definition to create an isolated environment just for your application. In practice, Devbox works similar to a package manager like yarn – except the packages it manages are at the operating-system level (the sort of thing you would normally install with brew or apt-get). See it in action: https://youtu.be/WMBaXQZmDoA

    2022 · github.com

  9. 9IM

    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

  10. 10
    Mailforge627

    Cold email infrastructure sorted in minutes

    2024 · mailforge.ai

  11. 11
    InboxSDK508

    First usable API to write Gmail Apps for 1B active users

    2015

  12. 12MS
  13. 13

    SMTP sandbox for email testing for developers and QA teams!

    Feb 2026 · sendpit.com

  14. 14
    HookBox120

    An Instant Webhook & Email Debugging tool for developers.

    Sep 2025

  15. 15
    MailCue82

    Run as a fully hardened production email server.

    Apr 2026 · olib-ai.github.io

  16. 16
    Mailnest100

    Sandbox Email testing tool for IT product, service companies

    2020

  17. 17

    The best place to sell and buy used devices from developers.

    2022

  18. 18

    Advanced editor for responsive HTML emails

    2015

  19. 19

    Build compatible HTML emails without coding knowledge

    2014

  20. 20VT

    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

  21. 21

    The collaborative email testing platform for modern teams

    Dec 2025 · mailsandbox.com

  22. 22DC

    I've been frustrated with dependency hell and clutter on my VPS from dev, so I built Devbox: a lightweight, open-source CLI tool that spins up isolated development environments using Docker. Each project runs in its own container, but your code stays in simple flat folders on the host machine—no messing with volumes or sync issues. Environments are disposable, so you can nuke and recreate them without losing your work. Key features: - Instant setup: `devbox init my-project` and you're in a fresh env with `devbox shell`. - Configurable via JSON: Define packages, services, and more in a…

    Sep 2025 · devbox.ar0.eu

  23. 23

    An open-source, disposable email service 💌

    2018

  24. 24

    Fake SMTP. Send Test Emails without spamming real customers

    2014

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