Add Custom AI buyers to your email list with n8n

What you'll need

• A published Custom AI product (how to sell your Custom AI).
• An n8n account (Cloud or self-hosted with a public HTTPS address).
• Credentials for your email platform added in n8n.

Step 1: Create the Webhook node

1. 01

   Add a Webhook trigger

   Create a new workflow and add a Webhook node as the trigger. Set HTTP Method to POST. Leave Authentication on None. Set Respond to Immediately.

2. 02

   Copy the Production URL

   Open the Production URL tab (not Test) and copy it. It looks like https://your-n8n.app/webhook/….

3. 03

   Listen for a test

   Click Listen for test event. n8n now waits for one request so you can see the fields. The Test URL differs from the Production URL, so paste the Production one into Eden and use Listen for test event only to inspect data.

Step 2: Paste it into Eden

1. 01

   Open your sales dashboard

   In Eden, go to Custom AIs → Sell your AI → Open sales dashboard, or open app.eden.so/sales.

2. 02

   Save the URL

   Scroll to Automations, paste the Production URL, and click Save and turn on. Copy the signing secret if you plan to verify requests (optional, below).

3. 03

   Send a test

   Buy or claim one of your products with a different email. The message body arrives with buyerEmail, productTitle, event, status, amountUsd, bundleCredits, and occurredAt.

Step 3: Keep only purchases

Add an If node after the webhook. Condition: {{ $json.body.event }} is equal to purchase.created. Connect the true output to your email step. Connect the false output to a refund step if you want one, or leave it empty.

Step 4: Add the buyer to your list

Add a node for your platform on the true branch. Map {{ $json.body.buyerEmail }} to the email field and {{ $json.body.productTitle }} to a tag.

Kit (ConvertKit) Node: ConvertKit → Form → Add Subscriber, or Tag → Add Subscriber.

Mailchimp Node: Mailchimp → Member → Create. Pick your list, set Status to subscribed, and add productTitle under Tags.

MailerLite Node: MailerLite → Subscriber → Create. Choose a group for buyers.

beehiiv, Loops, or any platform without a node Use an HTTP Request node with the platform's create-subscriber endpoint. For Loops, POST to https://app.loops.so/api/v1/contacts/create with your API key as a Bearer token and a JSON body of { "email": "{{ $json.body.buyerEmail }}", "source": "{{ $json.body.productTitle }}" }.

Save and Activate the workflow. Active workflows are the only ones that process the Production URL.

Optional: verify the signature

Eden signs each request so you can be sure it came from Eden. Add a Code node between the Webhook and the If node:

const crypto = require("crypto");
const secret = "whsec_…"; // your signing secret from Eden
const headers = $input.first().json.headers;
const body = JSON.stringify($input.first().json.body);
const expected =
  "sha256=" +
  crypto
    .createHmac("sha256", secret)
    .update(`${headers["x-eden-timestamp"]}.${body}`)
    .digest("hex");
if (expected !== headers["x-eden-signature"]) {
  throw new Error("Bad signature");
}
return $input.all();

For this to match, the Webhook node must pass the raw body unchanged. If your n8n version reorders JSON keys, turn on Raw Body in the Webhook node's options and hash $input.first().binary.data decoded to a string instead.

Handling refunds

On the false branch of the If node, check for purchase.refunded and use your platform's Remove Tag or Unsubscribe node. Many creators skip this and keep refunded buyers on the list.

If nothing arrives

• Make sure the workflow is Active and Eden has the Production URL, not the Test URL.
• Self-hosted n8n must be reachable at a public https:// address. Eden refuses http://, localhost, and raw IP addresses.
• Eden waits up to 8 seconds and retries once. Keep Respond on Immediately so slow email platforms do not cause a retry.