Add buyers to your email list automatically

How it works

Your sales dashboard has an Automations card with one field: a webhook URL. A webhook is just a web address that accepts a message. When a purchase happens, Eden posts a small message to that address with the buyer's details.

Automation tools give you a webhook URL for free. You paste it into Eden, then tell the tool what to do with each message, such as "add this email to my Kit list and tag it Newsletter Writer buyer."

Eden sends a message for two events:

• A purchase or free claim (purchase.created). Add the buyer to your list, tag them, or start a welcome sequence.
• A refund (purchase.refunded). Remove the tag, move them to a different segment, or do nothing.

Set it up

1. 01

   Create a webhook trigger in your automation tool

   In Zapier, Make, or n8n, start a new automation with a webhook trigger. The tool shows you a URL. Copy it. Each guide below has the exact clicks.

2. 02

   Paste the URL into Eden

   Open Custom AIs → Sell your AI → Open sales dashboard, scroll to Automations, paste the URL, and click Save and turn on. Eden shows a signing secret. You can ignore it unless you write your own code (see below).

3. 03

   Send a test purchase

   Publish a free product, or set a paid product's price and buy it yourself with a different email. Your automation tool receives the message and shows the fields you can map.

4. 04

   Add an action for your email platform

   Map buyerEmail to the email field and productTitle to a tag or custom field. Turn the automation on.

Pick the guide for your tool:

• Zapier
• Make
• n8n

What Eden sends

Each message is a JSON body like this:

{
  "event": "purchase.created",
  "purchaseId": "pur_8f3c…",
  "productId": "prod_51a9…",
  "productTitle": "Newsletter Writer",
  "buyerEmail": "[email protected]",
  "amountUsd": "29.00",
  "bundleCredits": 500,
  "status": "paid",
  "occurredAt": "2026-09-06T17:20:00.000Z"
}

Field	What it is
event	purchase.created or purchase.refunded
buyerEmail	The email the buyer used at checkout
productTitle	The product name, useful as a tag
amountUsd	What they paid. 0.00 for free products
bundleCredits	Credits included with the purchase
status	paid, free, or refunded
occurredAt	When it happened, in UTC

Which email platforms work

Anything your automation tool can talk to. These are the common ones and the action to look for:

Platform	Action to use
Kit (ConvertKit)	Add subscriber to a form or sequence, or add a tag
Mailchimp	Add or update subscriber, with a tag
beehiiv	Create subscription
MailerLite	Create or update subscriber, add to group
ActiveCampaign	Create or update contact, add tag
Loops	Create contact, send event
Klaviyo	Add profile to list
Substack	No add-subscriber action exists. Download the buyers CSV from your sales dashboard and import it in Substack instead

Verifying messages in your own code

You only need this if you send the webhook to a server you wrote yourself. Zapier, Make, and n8n do not need it.

Eden signs every message with your signing secret. The request carries three headers:

• X-Eden-Event: the event name.
• X-Eden-Timestamp: the send time in milliseconds.
• X-Eden-Signature: sha256= followed by an HMAC-SHA256 of timestamp.body using your secret.

To verify, rebuild the HMAC from the timestamp header and the raw request body, and compare it to the signature header. Reject messages whose timestamp is more than a few minutes old.

Other details:

• The URL must start with https://.
• Eden waits up to 8 seconds for a reply and retries once if it fails. A slow or broken endpoint never blocks a purchase.
• Your secret is created the first time you save and shown again after every save. Clear the URL and click Turn off to stop sending.