Mailgent
DE EN
Early Access
Email infrastructure for AI agents

Give your AI agents their own inbox.

Mailgent gives every agent a real email address — send, receive and reply in-thread, via API. Hosted in the EU, GDPR-compliant, with no US detour.

Get Early Access How it works

Servers in Germany · DKIM/SPF/DMARC · DPA on request

EU hosting (Nuremberg · Paris) GDPR & DPA DKIM · SPF · DMARC Signed webhooks (HMAC) Your own customer domain
Live in three steps

From a domain to a sending agent.

No mail server of your own, no IP warm-up, no abuse handling. Mailgent takes care of it.

Connect a domain

You provide your domain, Mailgent generates the DKIM/SPF/DMARC records automatically. Add them once to your DNS — verified and done.

Inboxes via API

One inbox per agent, each with its own address. Create, list, delete — all through a lean REST API with SDK examples.

Send & receive

Incoming mail arrives signed, via webhook. Send and reply in-thread via API — attachments included. Your agent communicates like a human.

Built for agents, not for inboxes

Everything an agent needs to email.

One inbox per agent

Every agent gets its own address and its own inbox — cleanly separated, isolated per tenant.

Send & receive via API

A REST API for inbound and outbound mail, threading and reading. Clear endpoints, predictable responses, SDK examples.

Signed webhooks

Incoming mail delivered to your agent in real time — HMAC-SHA256 signed, with retry and exponential backoff. Nothing gets lost.

Attachments included

Files out and in — PDFs, images, invoices. Inbound and outbound, straight through the API, no extra service needed.

Your own domain

Your agents send from agent@your-domain.com — white-label, no foreign sender, reputation isolated per customer.

EU-sovereign & GDPR

Receiving, storage and sending all run in the EU. DPA on request, no US sub-processor on the critical path.

Model Context Protocol (MCP)

Your AI uses inboxes directly — without a line of API code.

Mailgent ships an MCP server. In Claude, Cursor, Codex & any MCP client, your agent gets ready-made tools: create an inbox, send, receive and read mail — natively as tool calls.

  • create_inbox · list_inboxes
  • send_message · get_message · list_messages
  • create_webhook · list_domains · list_plans
  • Works with any MCP-capable client — your API key stays local.
{
  "mcpServers": {
    "mailgent": {
      "command": "npx",
      "args": ["-y", "mailgent-mcp"],
      "env": { "MAILGENT_API_KEY": "aam_…" }
    }
  }
}

Add it to your client's MCP configuration (Claude Desktop/Code, Cursor, Codex) — done.

The difference

The US providers can do a lot. Just not stay in the EU.

Agent inboxes exist now — nearly all of them in the US. Mailgent is the European answer: the same developer experience, but your data and sending stay in the EU.

  • EU server location. Receiving on our own MX in Germany, sending through an EU mail provider in France.
  • DPA & GDPR. Data processing agreement on request, clear deletion concepts, no third-country surprises.
  • Deliverability included. We set up DKIM, SPF and DMARC. Reputation isolated per customer domain — your standing doesn't depend on anyone else.
  • Made for agencies. White-label per customer: own domain, own sender, clean tenant separation.
Receiving (inbound)MX in DE · own server
Sending (outbound)EU relay · Paris
AuthenticationDKIM · SPF · DMARC
Webhook signatureHMAC-SHA256
Tenant separationper inbox / domain
Data locationEU only
Pricing

Fair pricing that grows with your agents.

White-label on your own domain. No free tier — in exchange for clean reputation and no spam neighbours.

Starter
For your first agent in production.
€49/month€490/year
  • 1 own domain
  • 5 agent inboxes
  • 20,000 emails / month
  • Signed webhooks & attachments
  • DKIM / SPF / DMARC
  • Email support
Pro
For agencies with several agents & clients.
€129/month€1,290/year
  • 3 own domains
  • 25 agent inboxes
  • 100,000 emails / month
  • Multiple API keys & team seats
  • No “Mailgent” footer
  • DPA included · priority support
Scale
For high volume and many customer domains.
€299/month€2,990/year
  • 10 own domains
  • 150 agent inboxes
  • 500,000 emails / month
  • SLA & dedicated reputation
  • Phone & Slack support
  • Everything in Pro
Enterprise
Unlimited domains & inboxes, dedicated IP, your own EU cloud / on-premise, SSO (OIDC/SAML), custom DPA. For platforms that resell agent mail.
Contact sales

All prices net, plus VAT. Overage: €1 / 1,000 emails above your included volume. Cancel monthly, any time.

Need a little more? Add it on.

On Starter, Pro and Scale — adjustable any time, monthly or yearly.

+€5
/ month per domain

Additional domain

One more customer domain to send and receive on.

+€2
/ month per inbox

Additional inbox

One more agent with its own address and inbox.

+€4
/ month per 10,000

More email volume

10,000 additional sent emails per month.

+€5
/ month per seat

Team seat

One more member in your organisation.

Plans compared

Starter€49/mo Pro€129/mo Scale€299/mo Enterprisecustom
Core
Agent inboxes525150unlimited
Own domains1310unlimited
Emails / month20,000100,000500,000custom
Attachments✓✓✓✓
Threading & replies✓✓✓✓
Deliverability
DKIM · SPF · DMARC✓✓✓✓
Own domain (white-label)✓✓✓✓
No “Mailgent” footer—✓✓✓
Isolated reputation✓✓✓✓
Dedicated IP——✓✓
Operations & legal
EU hosting✓✓✓✓
Signed webhooks (HMAC)✓✓✓✓
DPA—✓✓✓
SLA——✓✓
SSO (OIDC/SAML)———✓
Support
Email support✓✓✓✓
Priority support—✓✓✓
Phone & Slack——✓✓
Q & A

Frequently asked questions

Where is the data hosted?

In the EU only. Receiving runs through our own mail server in Germany, sending through an EU mail provider in France. No US sub-processor on the critical path.

Why is there no free tier?

Because every domain and every sender affects everyone's deliverability. Without a free tier we keep abuse and bad reputation out — and every paying customer benefits.

Do the agents use my own domain?

Yes. Mailgent is white-label: your agents send and receive on agent@your-domain.com. We generate the DKIM/SPF/DMARC records, you add them once to your DNS.

How does my agent receive mail?

Via signed webhook in real time (HMAC-SHA256) — or by polling the API if you'd rather not run a public endpoint. Delivery attempts are retried with backoff.

Do I get a DPA (data processing agreement)?

Yes, included from the Pro plan, custom for Enterprise. That makes Mailgent a clean part of your GDPR documentation.

Can I cancel monthly?

Yes. Monthly plans can be cancelled at any time to the end of the month. Yearly plans save two months versus paying monthly.

Give your agents a voice over email.

Mailgent is in closed early access. Claim your access now and one of the first spots.

Request early access See pricing