HTML + Flodesk integration

Plandalf has no native Flodesk steps. A static HTML page loads the Plandalf script and opens the offer; after payment a Send Webhook step can call Flodesk's API to add the buyer to a segment, or you can route it through Zapier's Webhooks. Flodesk also lists its own webhooks for subscriber events.

1. Add the script and a button

   Put the SDK script tag on the page, then a button with data-plandalf-present set to the offer slug. Open the page, click through, and check the amount before wiring anything else.

2. Create the Flodesk segment

   In Flodesk make a segment for buyers and build the workflow that starts when someone is added to it. Note the segment ID.

3. Get a Flodesk API key

   Create a personal API key in your Flodesk account and read Flodesk's API docs for how to send it as a Basic authorization header.

4. Build the sequence

   Start on Checkout Completed for your offer. Add Send Webhook, method POST, the subscribers URL, the Authorization header and a JSON payload with email as {{trigger.customer_email}}, first_name from the first name variable and segment_ids as a list holding your segment ID.

5. Test the whole route

   Run the step's test with your own email, look for the subscriber and segment in Flodesk, then buy with a Stripe test card and Run on test purchases on.

• Flodesk's API limits are 100 requests a minute by default and 20 a minute for the batch endpoint, per its developer docs.
• A Flodesk workflow can start from a segment, but Plandalf's notes say Flodesk has no native webhook action in workflows. Zapier is the usual route for events leaving Flodesk.
• Flodesk's merge-tag support varies by plan, so a countdown with a personal deadline may fall back to a deadline per visitor.
• A refund does not take anyone out of a segment. Add a sequence on Invoice Refunded that calls Flodesk's segment endpoints if you need that.

Does HTML integrate with Flodesk?

Plandalf connects them only indirectly. A plain HTML page hosts the Plandalf checkout, and a Send Webhook step can add the buyer to a Flodesk segment through Flodesk's API.

How do I add checkout buyers to Flodesk?

Use a Checkout Completed sequence with Send Webhook to Flodesk's create or update subscriber endpoint, passing the email and a segment ID, with your key in the Authorization header.

Can Flodesk start a Plandalf promo?

Yes. Route new subscribers through a Zap with Webhooks by Zapier to a Plandalf catch URL, or test one of Flodesk's own subscriber webhooks against it.

Checked October 26, 2026 against Plandalf's own setup guides and the vendor documentation: Flodesk developer docs.