Growth · alternatives · 2026
24 alternatives to SuperMailOS
Business email on your own domain, live in five minutes
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
HappyMail▲201Eight years ago, I was job hunting and felt embarrassed by my Gmail address. I tried registering firstname.lastname — taken everywhere. So I thought: "I'm in IT, I'll set up my own domain with my own IMAP/SMTP. How hard could it be?" A lot went wrong. Forgotten renewals. rocky DNS mistakes. I ended migrating toward Google Workspace, but in the end it felt overkill, having a subscription there plus the whole registrar subscription, and the whole GAFAM sticker on it. Moreover, the final price was way too high for me at the time. Six months ago, someone approached me and related to that…
Jan 2026 · happymail.tech · 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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Greenmor Mail▲212One inbox. Outreach, team chat, AI, and video — built in.
2025 · greenmormail.com · its alternatives →
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1SecMail▲112Free disposable email that actually arrives in real time
2025 · tmaily.com · its alternatives →
- 5MD
Hi HN, This is a project [1] I've been working on for a little while and I'm interested in your feedback and point of view. Many of us would have verified a domain name by pasting a string into a DNS TXT record. Some providers ask us to store this DNS TXT record at a domain using a DNS label like "_provider" e.g. _provider.yourdomain.com, and some providers ask that you do it at the zone apex (God help us [2]). The Domain Verification protocol stores a DNS TXT record at a DNS name derived from a hashed "verifiable identifier" (think email, telephone, DID), enabling anyone that can prove…
2023 · domainverification.org · its alternatives →
- 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 · its alternatives →
- 7
Email on your own domain. $9 a year, unlimited mailboxes
Sep 2026 · franklymail.com · its alternatives →
- 8
Mailway▲56OSS and self hostable catch-all incoming email routing
2021 · github.com · its alternatives →
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KaiMail▲6I've always had the need to quickly just setup an email service for all the different projects and communities that I run, so I built KaiMail to do that. I can't stand the fact that getting emails for your domains can be so difficult compared to setting up a static website. If you're running an open-source project or an open-source community, I'm happy to get you an upgrade at no cost.
Mar 2026 · kaimail.net · its alternatives →
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It's a self-hosted mailbox for all emails coming to your own domains, with Web interface and CLI included. Notes: - all emails share the same inbox, as long as set your DNS correctly - Web client via self-hosted Docker or Cloudflare Pages - need additional access controls, may use Basic Auth or Forward Auth with Cloudflare deployment
2024 · github.com · its alternatives →
- 13
Hi HN – Kristyna here. I built this free, online email validator and would love to share it with you. What it checks: - Syntax – Confirms correct proper email format. - Domain & DNS – Verifies the domain exists and resolves. - MX records – Verifies the domain can receive mail. - SMTP handshake (optional) – Checks the mail server accepts the recipient (no message is sent). - Disposable domains – Flags temporary inbox providers that can hurt deliverability lists. - Common typos – Catches mistakes and suggests fixes. How it works: Paste an email > click Validate > get a clear result with…
Feb 2026 · sidemail.io · its alternatives →
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SMTP server setup in seconds | 10/10 delivery score
2025 · selfhostedsmtp.com · its alternatives →
- 16
Own your SMTP. Own your reputation.
Jul 2026 · remail.quarred.com · its alternatives →
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BaseMailer ▲18Design & send personalized bulk emails from Airtable.
Jan 2026 · basemailer.app · its alternatives →
- 21
GetMX▲8Domain email, Multiple country email, Catch-All, Random Mail
2024 · getmx.com · its alternatives →
- 22
cold0 - bring your own SMTP cold email sending and managing
Feb 2026 · cold0-gamma.vercel.app · 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 →