02 The details
The details that make mail feel fast and safe — no add-ons, no upsell screens.
Unlimited aliases
hello@, billing@, anything@ — as many as you like, free.
All your domains
Three on Pro, unlimited on Business. One login for all of them.
Shared mailboxes
Give teammates support@ or sales@ without sharing a password.
Snooze
Hide a thread until tomorrow morning. It comes back on time.
Filters & rules
File receipts, flag VIPs and sort by address, automatically.
Instant search
Every message on every domain, from one search box.
Spam that learns
Mark it once and it learns what you never want to see.
Two-factor sign-in
Authenticator codes and recovery keys on every account.
iPhone and Android apps
Native apps with Undo Send and notifications you can act on.
Works with any app
IMAP and SMTP for Apple Mail, Outlook and Thunderbird.
Import & export
Bring your old mail in. Take all of it with you.
API, webhooks & AI
Use your mail from your own code, or let an AI assistant read and draft.
03 AI agent inboxes
Give an AI agent its own address on your domain, next to your team’s: support@, invoices@, bookings@. Its mail shows in the app for the person it works for. Every seat includes 2 agent inboxes on Pro, 5 on Business.
Waiting for approval
Held from the agent
Its email to someone new waits for a person, exactly as it would go out. Mail that fails sender checks never reaches it.
04 For agents & developers
Your own code and your AI assistant can work your mail today: a REST API, signed webhooks and an MCP server, with keys you scope and can revoke in a click. Claude (on the web, desktop and phone) and ChatGPT connect with a sign-in; Claude Code, Codex and Cursor connect with a key.
05 iPhone and Android
Native apps for iPhone and Android, built in SwiftUI and Jetpack Compose — not a website in a wrapper.
Every address, a tap apart
All your mail on one screen, or one domain at a time. Replies go out from the address the mail came to.
Sign in with a QR code
Scan the code on the web app and you're in — no password typing on glass.
Undo Send and Send later
Take an email back, or hold it until morning. Works offline, too.
Notifications you can act on
Done, Reply and Snooze from the lock screen, only for the mail you want.
06 Pricing
Aliases are free and unlimited. Every plan starts with a 14-day free trial — no card needed.
ProMost popular
$3per mailbox
a month
Billed yearly · $4 month to month
Professional email, up to 3 domains.
Business
$5per mailbox
a month
Billed yearly · $6 month to month
Unlimited domains, your whole portfolio.
What you'd pay Yearly
SuperMailOS Pro$12/mo
Google Workspace$28/mo
Microsoft 365$28/mo
You'd keep
$192a year
Pro covers up to 3 domains. Aliases are free on both.
Yearly billing. Google Workspace Business Starter $7 and Microsoft 365 Business Basic $7 per user a month: US list prices from Google's and Microsoft's own pages, checked 14 Oct 2026.
Still comparing? Ask your AI — we've written the question.
07 Switching
acme.co
01Point your domain
One click on Cloudflare, DigitalOcean, Linode, Vultr, Hetzner DNS and Spaceship. Anywhere else, we show you exactly what to paste.
02Create your addresses
A mailbox for each person, and free aliases for everything else — hello@, billing@, support@.
Web app✓
Apple Mail✓
Outlook✓
Thunderbird✓
03Keep your apps
Use the web app, or Apple Mail, Outlook and Thunderbird over IMAP. There's a native Android app, too, and the iPhone app is coming soon.
08 Questions
Something else? Write to us — a real person answers, usually the same day.
No. Your domain stays with whoever you bought it from. We connect its mail records in one click on Cloudflare, DigitalOcean, Linode, Vultr, Hetzner DNS and Spaceship — or show you exactly what to paste anywhere else.
Yes. Every mailbox speaks IMAP and SMTP, so any mail app can connect, and there's a fast web app. There's a native Android app, too, and the iPhone app is coming soon.
A mailbox is a person — their own login and storage. An alias is another address, like hello@ or billing@, that delivers into a mailbox. You pay for mailboxes; aliases are free and unlimited.
Google sells an office suite per user, from $7 a month. We only do email — so it starts at $3, aliases cost nothing, and every domain you own sits in one inbox.
Yes. Give each agent an inbox on your domain, next to your team's. By default it asks a person before emailing anyone new, and email that fails sender checks never reaches it. Agent inboxes don't take a paid seat: each seat includes 2 on Pro and 5 on Business.
Yes — 14 days of Pro, no card needed. If you don't pick a plan, nothing is charged.
Yes. Export any mailbox, point your domain somewhere else and you're done. Monthly plans can be cancelled at any time.
Try it free for 14 days. No card, and your domain stays yours.