Automatic Postcard Sending from CentralStationCRM using EchtPost - n8n Workflow

Sales teams and marketers using CentralStationCRM who want to automate personalized physical outreach.
Users looking for advanced n8n templates integrating external APIs like EchtPost.
Technical users seeking examples of custom API integration using the n8n HTTP Request node.
Anyone needing a reliable n8n workflow solution for CRM-triggered communications and leveraging a custom n8n trigger.

Manually sending personalized physical mail, like postcards, to new or valuable CRM contacts is tedious and error-prone. This specialized n8n workflow solves that problem by providing a powerful, hands-off automation solution. This n8n workflow is triggered automatically whenever a person record is updated in CentralStationCRM. By checking for a specific tag (like 'EchtPost'), the automation ensures that only relevant contacts are processed. Leveraging the robust capabilities of an n8n node for API communication, it reliably pulls contact address data, maps it, and sends it directly to the EchtPost service, automating a unique touchpoint in the customer journey. This custom n8n template helps bridge the gap between digital CRM management and physical communications.

This n8n workflow operates on a specific event-driven logic:

1. Trigger Event: The process starts with a CentralStationCRM webhook configured to fire whenever a person's record is updated. This webhook is the primary n8n trigger, capturing the contact's full data payload, including addresses and tags.


2. Data Extraction: The subsequent n8n node, a Set operation, isolates and formats the critical data points required by EchtPost (company name, street, zip, city, country code, and tags) from the large CentralStationCRM payload.


3. Conditional Check: An If n8n node evaluates the extracted taggings. The n8n workflow only proceeds down the success path if the taggings field contains the exact string 'EchtPost'. If the condition is not met, the workflow terminates via a Do Nothing node.


4. API Action: If the condition is met, the workflow executes the final step: sending an HTTP POST request to the EchtPost API. This request uses expressions to dynamically insert the contact's address information, along with required credentials (API key and template ID), ensuring a personalized postcard is generated and queued for delivery. This highly functional n8n node handles the entire interaction with the third-party service.

To deploy and use this specialized n8n workflow, follow these steps:

1. Import the n8n Template: Import the provided n8n workflow JSON into your n8n instance.


2. Configure the Webhook n8n Trigger: Double-click the 'Person is updated in CentralStationCRM' n8n node to retrieve the unique webhook URL (using the Production URL for live operation).


3. Setup CentralStationCRM Webhook: Log into CentralStationCRM, navigate to Account Settings > Webhooks, and create a new webhook. Set the monitored object type to 'Person' and the monitored event to 'Update'. Paste the URL obtained from the n8n trigger node into the 'Endpoint URL' field. Crucially, set 'Nested objects' to include: tags, addrs, companies.


4. Obtain EchtPost Credentials: Secure your EchtPost API key and the desired postcard template ID from the EchtPost settings and template URLs, respectively.


5. Configure the HTTP Request n8n Node: Double-click the 'Send postcard with EchtPost' n8n node. In the JSON body configuration, replace the placeholders (HIER-API-KEY-EINTRAGEN, HIER-TEMPLATE-ID, and EMAIL EINTRAGEN) with your actual EchtPost API key, template ID, and notification email address. Ensure this n8n node uses the 'Expression' setting for the JSON body.


6. Activate: Save your changes and set the main n8n workflow switch to Active.

Person is updated in CentralStationCRM (Webhook n8n trigger): This initial n8n node serves as the entry point. It listens for POST requests from CentralStationCRM whenever a person's record is updated, initiating the n8n workflow. Key configuration: HTTP Method set to POST, custom Webhook ID path.
Set fields needed for EchtPost (Set n8n node): This crucial n8n node filters the incoming data, selecting only the specific fields needed for the postcard address (company name, street, zip, city, country code, and taggings), streamlining the data payload.
Is "EchtPost" included in "taggings"? (If n8n node): This conditional n8n node uses a string 'contains' operation to determine if the specific tag '"EchtPost"' is present in the record. It controls the flow of the n8n workflow, ensuring the postcard is only sent when intended.
Send postcard with EchtPost (HTTP Request n8n node): This powerful n8n node makes the final POST request to the EchtPost API (/v1/cards). Key configuration: JSON body defined using expressions to dynamically populate contact address details, requiring user input for apikey, templateid, and notificationemail.

• Do nothing (NoOp n8n node): Provides a clean termination point for the failure branch of the If node.