Read your company's Cégkapu mail through an API

What you can build on Cégkapu

• List incoming documents

  Build this

  Reads Beérkezett üzenetek (received messages) in your company's Cégkapu tárhely, with sender, document type and labels for each message.

  Takes

  Received since (optional), label (optional)

  Returns

  Sender, document type, type description, file name, received date, read or unread, labels

• Get a document's message details

  Build this

  Opens one message in Cégkapu and reads its Üzenet részletei (message details) window and the document's text.

  Takes

  Sender, file name, received date

  Returns

  Sender, recipient, document type, type description, referenced id, file name, document text

• List failed-delivery certificates

  Build this

  Reads Meghiúsulási igazolások (failed-delivery certificates) in your company's Cégkapu: documents you sent that could not be delivered.

  Takes

  Issued since (optional)

  Returns

  Original recipient, document type, referenced id, date

• Move a document to Tartós tár

  Build this

  Moves one message from Beérkezett üzenetek into Tartós tár (permanent storage) in your company's Cégkapu, so it is kept after 30 days.

  Takes

  Sender, file name, received date

  Returns

  File name, folder, moved at

Automate Cégkapu with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• New Cégkapu documents, every weekday morning

  Build this

  Starts

  Every weekday at 7:30

  Step 1

  List the incoming documents in Beérkezett üzenetek.

  Step 2

  Keep the messages that were not there on the last run.

  Step 3

  Email you each one with its Feladó, document type, description and received date.

• NAV documents sent to your accounting system

  Build this

  Starts

  Every weekday at 9:00

  Step 1

  List the incoming documents received since yesterday.

  Step 2

  Keep the ones whose Feladó is NAV.

  Step 3

  Post each one's document type, description and received date to your accounting system's webhook.

• Documents close to the 30-day limit

  Build this

  Starts

  Every Monday at 8:00

  Step 1

  List the incoming documents in Beérkezett üzenetek.

  Step 2

  Keep the ones received more than 21 days ago.

  Step 3

  Email you the list so someone can move what must be kept to Tartós tár.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “List incoming documents” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "tarhely.gov.hu/list_incoming_documents",
    "input": {
      "received_since": "2026-11-09"
    }
  }'

{
  "status": "completed",
  "data": {
    "cegkapu": "Acme Kft.",
    "messages": [
      {
        "sender": "NAV",
        "document_type": "Ellenőrzés",
        "type_description": "Felszólítás hiánypótlásra",
        "file_name": "ellenorzes_hianypotlas.pdf",
        "received_at": "2026-11-10T08:14:00+01:00",
        "read": false,
        "labels": [
          "Adó"
        ]
      }
    ],
    "count": 1
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

Cégkapu’s own options

Cégkapu is the official electronic mailbox every company in Hungary has had to use since 1 January 2018, and its service page lists it as free. Companies with a finalised Cégkapu and a large volume of official documents can have a machine interface, the gépi cégkapu, that sends and downloads documents without a clerk. Everyone else works in the tárhely web pages.

Read on November 12, 2026: Cégkapu service description, Jogosultságkezelés, automatikus címkézési szabályok (IdomSoft, v.3), Ügyfélkapu+ sign-in.

Signing in to Cégkapu

Since 16 January 2025 state sites accept only Ügyfélkapu+ or the Digitális Állampolgár (DÁP) app, and Ügyfélkapu+ asks for an authenticator app code or an emailed code. Each person signs in with their own identity. With Fous you sign in once with your own account and an emailed code: the login is sealed with AES-256, and an expired session is signed back in.

Worth knowing

Beérkezett keeps documents for 30 days

Documents in the temporary store are kept for 30 days from arrival. Tartós tár keeps them for as long as the user decides, so anything you need later has to be moved there.

One Cégkapu and one cégkapumegbízott

A company can have only one Cégkapu, with one cégkapumegbízott. That person registers the cégkapu-ügyintézők, such as your accountant, who then sign in with their own identity.

Labels can hide documents from a user

A document carrying a restricted label can be handled only by the people assigned to that label, the cégkapumegbízott and ügykezelők with cégképviseleti jog. A method sees what its account may see.

Sending can be switched off per user

The cégkapumegbízott can tick Új üzenetküldés tiltása for an ügykezelő, which also blocks sending from ÁNYK and ePapír. It cannot be set for an ügykezelő with cégképviseleti jog.

More in Government: Southern, Eastern and Nordic Europe, EU

• Telemaco
• EUDR Information System
• Road Transport Posting Declaration Portal
• EU Funding & Tenders Portal
• UETS
• EPREL
• e-Zamówienia
• Mercell
• NEN
• Plataforma de Contratación del Sector Público
• Prozorro
• TRACES NT
• e-ΕΦΚΑ
• PUE ZUS
• Segurança Social Direta
• SGK İşveren Sistemi
• Sociálna poisťovňa e-Služby
• Dijital Vergi Dairesi
• myAADE
• Portal das Finanças
• e-Beyanname

Other industries: FCA RegData, DOB NOW, Loan Product Advisor, Invoice Processing Platform, OpenGov Procurement, Florida DOR eServices File and Pay.