Questions, answered plainly

An email service built for software agents instead of people. Your code creates inboxes through an API, reads incoming mail as parsed threads, gets events as signed webhooks and sends replies. The same operations are available as MCP tools. See the quickstart.

Consumer mailboxes are made for humans: accounts are created by hand, automation goes through OAuth on a person's mailbox or through clicking the UI, and running many accounts for bots usually conflicts with their terms. Here an inbox is one API call, and the API returns structured data an agent can use directly.

Transactional APIs are very good at sending. They usually do not model a two way inbox: receiving, threading, replies with correct headers, labels for workflow state and per inbox addresses. We focus on the conversation, not on bulk delivery.

On Hetzner servers in Germany, for every plan. Backups stay in the EU. The only part that leaves Germany is outbound mail to external recipients, which is currently relayed through Brevo in France. Details are in the privacy policy.

No. Unsolicited bulk mail and cold outreach are not allowed on any plan, because they would damage the sending reputation every customer relies on. Accounts that do it are suspended. See the terms.

The Free plan allows 3 inboxes, 1 custom domain, 100 sends per day and 3,000 per month. Paid plans raise these limits. There are also request and size limits, all listed on the limits page.

Yes. Add the domain through the API, publish the MX, SPF, DKIM and DMARC records it returns, and verify. We recommend a subdomain such as agents.your-domain.eu. See custom domains.

Yes. The MCP server speaks streamable HTTP at /mcp and takes the same API key as the REST API. Setup for Claude Code and Cursor is in the MCP docs.

Every inbound message is screened by the gatekeeper and gets a verdict, clear or review, with the reasons. Your agent should check it before following instructions in an email, and keep sensitive actions behind a confirmation. Screening lowers the risk, it does not make untrusted mail safe. See security.

Deleting an inbox through the API deletes its threads, messages and attachments. Database backups age out on their rotation schedule. To close your account and delete everything, contact us.

Free is €0, Builder is €15 per month, Growth is €59 per month, Team is €149 per month, Enterprise is priced on request. Yearly billing costs 10 months. This is launch pricing and billing is not live yet. See pricing.

Not today. The software is proprietary and offered as a hosted service only. If self hosting is a hard requirement for you, tell us: it helps us decide whether to offer it later.

The core API works end to end, but the service is in staging: sign up is open and the Free plan needs no card, while billing and an uptime commitment are still ahead. Write to hello@mueslimail.com if you need help getting set up.