Email for every product you run.
One inbox.
Connect all your domains. Every address on them, whether you@ or support@ or hello@, lands in one inbox. Pay for people, not addresses.
14 days free · no credit card · your own domain
northwind.io
acme.tools
lumen.app
One inboxevery address above, one login
One bill·pay per person·aliases free
Setting up a domain takes five minutes.
Not five minutes plus a support ticket. Five minutes, tap, tap, done.
Add a domain and SuperMailOS asks which addresses you want on it. Every one you tap, hello@ or support@ or billing@, delivers into one real inbox. The aliases are free, forever, on every plan.
The DNS records come straight from the mail server's own zone, not a template. One click on Cloudflare, DigitalOcean, Linode, Vultr or Hetzner; copy-paste anywhere else. We verify live while you watch, and we won't let you send from a domain that isn't verified, because that's exactly how mail lands in spam.
Mail from every domain arrives in the same inbox: threads, instant search, keyboard shortcuts, labels, signatures. Add the next domain whenever you like. It takes five minutes too.
Every product shouldn't mean another email bill.
The usual setup: one mail plan per domain, billed per user, forever. Four products, four bills, four admin consoles. Or forward everything to Gmail and reply as the wrong address.
SuperMailOS is one workspace. Every domain lives in it, every alias is free, and you pay per person. Running four products costs the same as running one.
| Domain | The old way | SuperMailOS |
|---|---|---|
| acme.app | Google Workspace · $7/mo | |
| northwind.io | Zoho Mail · $3/mo | |
| vela.studio | Fastmail · $5/mo | |
| hey.team | Google Workspace · $7/mo | |
| Total, per person | $22/mo | |
| With SuperMailOS Business | One bill | |
All four domains on one Business plan. Aliases are free on every plan (see pricing).
Your reputation is our job.
We run the mail server, so deliverability is ours to carry: DKIM on every message, DMARC parsed and reported, new-domain warm-up, sending-IP reputation watched day and night. On every domain you connect.
- messages authenticated in the last 30 days
- 1,321
- across every domain on this mail server
- DMARC pass rate
- 99%
- measured continuously, reported in your dashboard
- work for you per domain
- 0
- records generated, verified and monitored by us
What you get.
- One inbox for every domain you own
- Unlimited aliases, free on every domain and every plan
- Deliverability handled: SPF, DKIM, DMARC, warm-up, monitoring
- A real inbox: threads, search, labels, drafts, signatures, dark mode
- Works with your mail app: IMAP and SMTP included
- No mail server to run. That's our job.
One price per person. Every domain included.
Pro covers up to 3 domains. Business is unlimited, so connect your whole portfolio. Aliases are free on both, deliverability is handled on both, and the first 14 days cost nothing.
We run several products. Every new domain came with the same tax: another mailbox bill, another DNS afternoon, another place support mail goes to die. So we built the inbox we wanted: every domain, one login, one bill. The addresses are free. The deliverability is ours to carry.
— The SuperMailOS team
Thanks for the launch-day love.
We shipped on Product Hunt and read every comment. The product is live; bring your domain and send your first email in minutes.
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