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Business email

Email addresses on your own domain

you@yourcompany.com, in every mail app and in the browser, for €1 a mailbox a month — on the same platform that sends your app’s email.

Get started freeRead the mailboxes docs
  • 3,000 emails a month free
  • No credit card
  • Hosted in Finland
  • REST, SMTP and MCP

Works in every mail app

Real IMAP mailboxes: Apple Mail, Outlook, Thunderbird and phone mail apps connect with a server name, ports and the full address as the username.

Webmail included

Each person signs in at mail.poststack.dev with their address and password and sees only their own mailbox.

€1 per mailbox

1 GB of storage included, up to 50 GB at €1 per extra GB, on any paid plan. Connect up to five other accounts, such as an old t-online or GMX address, at no extra cost.

Who it is for

Small teams
An address for everyone, plus shared ones like hello@ that several people can read.
Freelancers
One professional address on your own domain, instead of a free-mail account on your business card.
Moving off an old provider
Connect the old address while people learn the new one, and answer both from one inbox.
Product teams
Receive replies to your app’s emails in a real inbox on the domain you already send from.

Set it up in three steps

  1. 1

    Verify your domain

    The same SPF and DKIM records you would use for sending.

  2. 2

    Add one MX record

    Point your domain’s mail at PostStack.

  3. 3

    Create mailboxes

    Give each person an address and a password, then add it to their mail app or open webmail.

What you’ll use

Mailboxes on your own domainEU-hosted email hosting with webmail included. Create mailboxes on your domain, let each person read and send at mail.poststack.dev, or connect any IMAP or POP3 client.Webmail for your whole teamGive everyone an address on your own domain and a clean, fast inbox in the browser. They sign in at mail.poststack.dev with their email address and password — nothing to install, no admin account to share, hosted in the EU.Your old address, in your new inboxConnect a t-online, GMX, WEB.DE, or other email account to your PostStack mailbox and read and answer it in the same place. Replies go out from the old address, through its own provider, so nothing changes for the people who write to you.Email APISend transactional email from EU infrastructure with a single API call. Official TypeScript, Python, and Go SDKs, plus REST examples for every major language.

In the docs

Frequently asked questions

How much does a business email address cost?

€1 per mailbox per month on any paid plan (from €5 a month), with 1 GB of storage included and up to 50 GB at €1 per extra GB. Mailboxes are not available on the free plan.

Can I keep using Outlook or Apple Mail?

Yes. Mailboxes are standard IMAP with SMTP submission, so any mail app works, and webmail reads the same mailbox — a message read in one is read in the other.

Can several people share one address?

Yes. Several people can sign in to the same mailbox and see the same read and archived state, because every change happens on the mail server.

Where is my email stored?

In Finland, on servers operated by a Danish company. Mail is not copied outside the EU.

More use cases

Transactional emailPassword resets, receipts, magic linksNewslettersBroadcasts to segments, unsubscribe built inAI agentsLet Claude, Cursor and your agents send emailSaaS productsOnboarding, product email and your customers’ domainsE-commerceOrder confirmations, shipping and receiptsGDPR-compliant emailEU hosting, a DPA and no CLOUD Act

Send your first email today

3,000 emails a month free, forever. No credit card, and about five minutes from sign-up to the first message in your inbox.

Get started freeSee pricing