mcPost

Hosted in Germany (EU) · GDPR-compliant

Let AI manage your inbox.

Connect any IMAP mailbox in two minutes. Your AI assistant sorts, drafts, files, and answers — securely, on your own mailbox, hosted in Germany. Your mail data never gets copied to us.

Get started — free How it works ↓
  • Hosted in Germany (EU)
  • GDPR & DPA-ready
  • AES-256 at rest, OAuth 2.1 in transit

Integrations

Works with the AI assistants you already use.

mcPost speaks the Model Context Protocol (MCP), so any spec-compliant client can use it. Add it once on our side, then point any client at the same URL.

  • C

    Claude

    Anthropic

    Live

    Add as a Custom Connector in Claude Web and Desktop. Dynamic Client Registration handles OAuth setup automatically.

  • G

    ChatGPT

    OpenAI

    Coming soon

    Listing in the ChatGPT App Directory (Apps SDK is built on MCP). Same backend, same login.

  • ⌘

    Any MCP client

    Spec-compliant

    Live

    Cursor, Continue, Cline, your own agent — anything that talks MCP works. OAuth 2.1 + DCR is standard.

  • ✦

    Gemini

    Google

    Evaluating

    Will land once Google ships a remote-MCP-capable client. Until then, point Gemini at the API via tools/function-calling.

  • M

    Microsoft Copilot

    Microsoft

    Evaluating

    Tracking Copilot's MCP-client progress. Will be added once remote MCP servers are first-class citizens.

  • Your AI not listed?

    If it speaks MCP, it works. Drop us a line and we'll prioritise.

    hi@mcpost.de →

Tools

What your AI can do with your mailbox.

Every action the AI can call appears here and is recorded in your audit log. No surprise capabilities — what's not on this list, the AI cannot do.

Read

Browse & search

  • list_mailboxes

    List all mailboxes connected to your account.

  • list_folders

    Browse the full folder tree of a mailbox.

  • search_mails

    Search by sender, subject, date range or flags.

  • read_mail

    Open a single message — sender, subject, body, attachments.

  • list_capabilities

    Self-describe which tools the current plan unlocks.

Write

Compose & organise

  • create_folder

    Add a new folder to a mailbox.

  • move_mails

    Move one or more messages to another folder.

  • draft_mail

    Compose a draft — reply, forward, or new message — saved to your Drafts folder for review.

  • send_mail Planned

    Send a message via your SMTP server. Requires explicit user confirmation.

  • flag_mail Planned

    Mark messages as read, unread, starred or important.

  • delete_mail Planned

    Move messages to the Trash folder. Hard deletion is opt-in and requires explicit user confirmation.

How it works

Three steps, two minutes.

No plugins to install. No mails copied off your mailbox. Your AI assistant talks to your existing IMAP server through us.

  1. 1

    Connect your mailbox

    Drop in your IMAP/SMTP credentials. They're encrypted with AES-256-GCM the moment they hit our server and never written to logs.

  2. 2

    Add to your AI client

    One URL into Claude (or any MCP client). OAuth 2.1 with PKCE + Dynamic Client Registration handles the rest — no client IDs to copy around.

  3. 3

    Talk to your inbox

    "Sort yesterday's invoices into the Accounting folder." "Draft a reply to Anna." The AI does it; you keep the audit trail.

What you get

Built for people who'd rather spend less time in email chaos.

🇩🇪

Hosted in Germany

All data stays in German data centres. GDPR-compliant, Auftragsverarbeitungs-Vertrag (AVV) on request.

🔐

Credentials encrypted at rest

IMAP credentials sealed with AES-256-GCM before they touch disk. Decrypted only in-memory for the moment a tool call needs them.

📬

Works with any provider

Standard IMAP + SMTP. Your Plesk mailbox, mailbox.org, STRATO, Proton Mail Bridge, IONOS, Posteo, your own Dovecot — anything that speaks the protocol.

🚫

We don't store your mail

Tool calls go straight to your IMAP server. Mail bodies, attachments, and headers stay on your mailbox — we don't cache, index, or persist them.

🔑

Passkey sign-in

No passwords. Passkey-first authentication via Hanko; sign in with your fingerprint or a security key.

📊

Full audit log

Every tool call is logged: which mailbox, which tool, which client. Exportable on the Business plan for compliance.

Pricing

Per mailbox. No cap. Switch anytime.

Pay only for the mailboxes you actually connect. Yearly plans get two months free. All prices include VAT.

Free

Try it out, no strings attached.

€0

For your first mailbox

Get started
  • 1 mailbox
  • Read-only access
  • 500 tool calls / month

Most popular

Premium

Daily inbox automation.

€1,49

per mailbox / month

Start Premium
  • Unlimited mailboxes
  • Read & write
  • Unlimited tool calls
  • Email support

Business

For compliance-conscious users.

€2,99

per mailbox / month

Start Business
  • Unlimited mailboxes
  • All Premium features
  • Signed DPA / AVV included
  • Exportable audit log
  • Priority support

FAQ

Frequently asked questions

What is MCP and how does it work? +

MCP (Model Context Protocol) is the open standard AI assistants use to talk to external tools. mcPost is a hosted MCP server: you add one URL to your AI client, log in once, and it can read and manage your mailbox via natural language — securely, on your own server.

Which email providers are supported? +

Any provider that speaks IMAP and SMTP — which is almost all of them. Plesk, mailbox.org, STRATO, IONOS, Posteo, Proton Mail (via Bridge), Fastmail, Gmail (with app password), your own mail server. We do not require provider-specific OAuth.

Where is my data stored? +

Your mail stays on your own mailbox — we never copy it. The only data we store is what's strictly required to operate the service: your encrypted mailbox credentials, your audit log, and the OAuth tokens issued to your AI client. All of it lives in our own infrastructure in Frankfurt.

How safe are my IMAP passwords? +

Credentials are encrypted with AES-256-GCM before they're stored. We use envelope encryption with key material managed in a dedicated secrets store, and we strictly separate responsibilities across the platform: the service that handles your account and management actions can encrypt new credentials but cannot decrypt existing ones. Only the isolated component that actually performs your mailbox call holds the decryption key — and only in memory, for the duration of that single call.

What's the difference between Free and Premium? +

Free covers read-only access on a single mailbox. Premium (€1.49/mailbox/month or €14.99/mailbox/year) unlocks the write tools — drafts, moves, sends, flagging, deletion — with no cap on mailbox count. Business (€2.99/mailbox/month or €29.99/mailbox/year) adds a signed DPA and an exportable audit log.

Can I cancel any time? +

Yes. No minimum term. Delete your account from the portal — credentials, audit logs, and tokens are wiped immediately.

Do you offer a data processing agreement (DPA)? +

Yes — on the Business plan we provide a signed DPA / Auftragsverarbeitungs-Vertrag on request. Required if you're handling third-party email under GDPR.

Stop managing your inbox by hand.

Set up your first mailbox in under two minutes. Free, no credit card.

Get started — free