> ## Documentation Index
> Fetch the complete documentation index at: https://nango.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ePost (KLARA)

> Integrate your application with the ePost Digital Letterbox API (built on KLARA) to onboard users into digital mail delivery

## 🚀 Quickstart

Connect to ePost (KLARA) with Nango and see data flow in 2 minutes.

<Steps>
  <Step id="create-integration" title="Create the integration">
    In Nango ([free signup](https://app.nango.dev)), go to [Integrations](https://app.nango.dev/dev/integrations) -> *Configure New Integration* -> *ePost (KLARA)*.
  </Step>

  <Step id="authorize-epost-klara" title="Authorize ePost (KLARA)">
    Go to [Connections](https://app.nango.dev/dev/connections) -> *Add Test Connection* -> *Authorize*, then enter your KLARA API key. Later, you'll let your users do the same directly from your app.
  </Step>

  <Step id="call-epost-klara-api" title="Call the ePost (KLARA) API">
    Let's make your first request to the ePost onboarding API (generate an onboarding link). Replace the placeholders below with your [Environment API key](/docs/reference/backend/http-api/api-keys), [integration ID](https://app.nango.dev/dev/integrations), and [connection ID](https://app.nango.dev/dev/connections):

    <Tabs>
      <Tab title="cURL">
        ```bash theme={null}
        curl "https://api.nango.dev/proxy/epost/onboarding" \
          -X POST \
          -H "Authorization: Bearer <NANGO-API-KEY>" \
          -H "Provider-Config-Key: <INTEGRATION-ID>" \
          -H "Connection-Id: <CONNECTION-ID>" \
          -H "Content-Type: application/json" \
          -H "Accept: text/html;charset=UTF-8, application/json" \
          -d '{
            "pinBrandedFolder": false
          }'
        ```
      </Tab>

      <Tab title="Node">
        Install Nango's backend SDK with `npm i @nangohq/node`. Then run:

        ```typescript theme={null}
        import { Nango } from '@nangohq/node';

        const nango = new Nango({ apiKey: '<NANGO-API-KEY>' });

        const res = await nango.post({
            endpoint: '/epost/onboarding',
            providerConfigKey: '<INTEGRATION-ID>',
            connectionId: '<CONNECTION-ID>',
            headers: {
                accept: 'text/html;charset=UTF-8, application/json'
            },
            data: {
                pinBrandedFolder: false
            }
        });

        console.log(res.data);
        ```
      </Tab>
    </Tabs>

    Or fetch credentials with the [Node SDK](/docs/reference/backend/backend-sdk/node#get-a-connection-with-credentials) or [API](/docs/reference/backend/http-api/connection/get).

    ✅ You're connected! Check the [Logs](https://app.nango.dev/dev/logs) tab in Nango to inspect requests.
  </Step>

  <Step id="implement-in-app" title="Implement Nango in your app">
    Follow our [Auth implementation guide](/docs/guides/auth/auth-guide) to integrate Nango in your app.

    To obtain your own production credentials, follow the connect guide linked below.
  </Step>
</Steps>

## 📚 ePost (KLARA) integration guides

Nango maintained guides for common use cases.

* [How do I link my ePost (KLARA) account?](/docs/api-integrations/epost-klara/connect)\
  Create an API key in KLARA and connect it to Nango

Official docs: [ePost Communication Platform Business documentation](https://developer.epost.ch/docs/api-docs/hvshdeijjdlzq-e-post-communication-platform-business-documentation)

## 🧩 Pre-built syncs & actions for ePost (KLARA)

Enable them in your dashboard. [Extend and customize](/docs/guides/functions/functions-guide) to fit your needs.

*No pre-built syncs or actions available yet.*

<Tip>Not seeing the integration you need? [Build your own](/docs/guides/functions/functions-guide) independently.</Tip>

***