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.
01
Tap the addresses you want
Add a domain and SuperMailOS asks which addresses you want on it. Every one you tap — hello@, support@, billing@ — delivers into one real inbox. The aliases are free, forever, on every plan.
02
Paste the records (or don't)
The DNS records come straight from the mail server's own zone, not a template. One click on Cloudflare, DigitalOcean, Linode, Vultr, Hetzner or Spaceship; copy-paste anywhere else. We verify live while you watch.
03
Answer it all from one inbox
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.
From
hello@northwind.io
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
- DNS records for you to babysit
- 0
- generated, verified and monitored by us
Nothing here is an add-on, and none of it costs extra.
One inbox for every domain
Mail from every domain you connect and every address on it lands in one place, with threads, instant search, and labels that work across all of them.
Unlimited aliases, free
hello@, support@, press@ — on every domain, on every plan. You pay for people, not addresses.
Deliverability is our job
DNS records come from the mail server's own zone and are verified live before you can send. DKIM on every message, DMARC parsed and reported.
A real inbox, not a forward
Threads, instant search, labels, drafts, signatures, keyboard shortcuts, dark mode. Reply as any address on any domain.
Your mail app still works
IMAP and SMTP are included on every plan, so Apple Mail, Outlook, Thunderbird, or anything that speaks standard mail just works.
No mail server to run
We run the mail server, the DNS, and the sending IPs. New-domain warm-up and reputation monitoring are included on every plan.
One inbox, every domain — live:
A slow morning. Reply as any address on any domain.
One price per person. Every domain included.
Aliases are free on both plans, deliverability is handled on both, and the first 14 days cost nothing.
Pro
Professional email, up to 3 domains
$3/mo per person, billed annually
or $4/mo month-to-month
- Up to 3 domains
- 10 GB per mailbox
- Unlimited aliases
- Managed SPF, DKIM & DMARC
- Deliverability monitoring
- IMAP, SMTP & webmail
Business
Whole portfolioUnlimited domains, your whole portfolio
$5/mo per person, billed annually
or $6/mo month-to-month
- Everything in Pro
- Unlimited domains
- 30 GB per mailbox
- DMARC report dashboard
- Priority deliverability routing
- Priority support
No credit card to start. Full plan details on the pricing page.
Fair questions, straight answers.
A mailbox is one real inbox with its own address and login — a person. An alias is an extra address (hello@, support@, press@) that delivers into a mailbox. Aliases are unlimited and free on every domain and every plan; you only pay for actual people.
Why we built this.
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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