Email your AI agents can run.
Real mailboxes on your own domains, with an MCP server and a full API. Your agent reads, sorts and drafts across every inbox, and sets up domains, DNS records and addresses for you.
We invite people from the list in small groups. Your address is used only for the invitation.
€0.01 a day plus what you use. Hosted in the EU. No ads.
MCP Connect your agent once
claude mcp add --transport http \
centomail https://mcp.centomail.com/mcpAPI Add a domain
curl -X POST \
https://api.centomail.com/v1/domains \
-H "Authorization: Bearer cm_..." \
-H "Content-Type: application/json" \
-d '{"name": "example.com"}'Your agent works across all of it
One connection covers every domain and product, with limits you set.
Reads every inbox at once
Connect Claude or any MCP client once and it sees the mail of all your domains and products. Limit it to the folders you choose when you want.
Drafts, you send
It sorts, summarises and prepares replies from the right address. You read the draft and send it with one click.
Sends when you allow it
Give an agent permission to send and it can answer the easy ones itself, from the right address and within your sending limits. Everything it sends is in your Agent activity log.
Everything a domain needs, for every one you have
Unlimited domains, mailboxes and addresses. You pay for storage and sending, not seats.
Set up by your agent
Domains, the DNS records they need, support@, hello@ and noreply@ through the API or MCP. Your coding agent ships the product and its email in the same session.
One inbox, every product
Mail to all your domains lands together, each message marked with the address it was sent to. Replies go out from that address, signed for its domain.
noreply@ for your app Later
Sign-up links and password resets go out through us, with limits that stop a wave of bot sign-ups from turning into spam.
Aliases and catch-all
An address per shop, newsletter or service, random masked ones for sign-ups, and a catch-all that remembers what it has seen.
Webmail, IMAP, JMAP
A fast webmail, or any mail app on your phone and computer. Standard protocols, so you are never tied to us.
EU hosted, no ads
Your mail is stored in the EU. We are paid for the service, not by reading your mail for advertisers.
€0.01 a day, plus what you use
One plan. Top up from €10, and the balance pays for your account and for what you store and send. You always see how long it will last, so there are no surprise bills.
- Account: €0.01 a day
- Mail storage: €0.75 per GB a year
- Sending: €0.30 per 1,000 messages
- Receiving, domains, mailboxes, aliases: free
- Start with a €1 trial credit. Taxes are added at checkout.
€7.40
Enough for about 13 months at your current usage.
This month: account €0.30 · storage 2.1 GB €0.13 · sent 412 €0.12
Cheaper than running it yourself
An agent can write a mail server in a weekend. Keeping mail delivered is the hard part, and it is what we do all day for everyone at once.
- Sending reputation built across many accounts, not a fresh IP that lands in spam
- Spam filtering, backups, certificates and updates handled
- Every domain's DNS checked continuously, with a clear message when something breaks
- We never ask for access to your DNS provider account
- A typical personal setup costs under €10 a year, less than the server alone
Give your AI agents an inbox. Keep yours.
We invite people from the waitlist in small groups while we test.