WordPress + Mailchimp integration

WordPress hosts the page and Mailchimp holds the audience; Plandalf sits between them. A Plandalf button in a Custom HTML block opens a checkout, and a Plandalf sequence then runs native Mailchimp steps to add the buyer, tag them and record an event. A Mailchimp signup form on the same page can also start a Plandalf sequence.

1. Add the button to a WordPress page

   Add a Custom HTML block, or paste into the page Code editor, with the Plandalf SDK script and a button that has data-plandalf-present set to your offer slug. Save the draft and check that WordPress did not strip the script.

2. Check the published page

   Open the live page signed out and click the button. Plandalf's WordPress guide warns that caching and optimisation plugins can move or delay scripts, so test the real output and not only the editor preview.

3. Create a Mailchimp API key

   In Mailchimp open your profile menu, then Extras, then API keys, and choose Create A Key. Copy every character, including the data centre part such as -us21.

4. Connect Mailchimp

   In Plandalf go to Automation, then Marketplace, click Connect on Mailchimp, and paste the key into API Key. Wait for Mailchimp connected.

5. Build the sequence

   Under My Sequences use Plandalf and Checkout Completed with your offer. Add Mailchimp, Add Tags to Contact, pick the audience and set Email Address to {{trigger.customer_email}}. Then add Record Event with the name your Customer Journey starts from.

6. Test, then add the refund template

   Switch on Run on test purchases, buy with a test card and your own email, and confirm the tag in the audience. Add Remove access on refund under Templates, pick the same audience and tag, and switch the test setting off.

• Mailchimp's help says signup forms on WordPress.com need a paid Business or eCommerce plan, and Plandalf's WordPress guide says to confirm that your plan lets you insert JavaScript. Check both before building the page.
• Plandalf sends purchases to Mailchimp as events and tags and not as ecommerce orders, and Mailchimp events carry no revenue.
• Mailchimp recommends pasting its embedded form into a post or page, because headers, footers and sidebars may not support the code. Put the Plandalf button in the page body too if you place both together.
• Plandalf's MemberPress plugin is an early-access source release and not a general WordPress membership connection, so do not build a paid-access flow on it yet.
• Merge fields have to exist in the audience before a step fills them. Mailchimp does not create one the first time a value is sent.

Does WordPress integrate with Mailchimp?

Yes, Mailchimp documents ways to add its signup forms to WordPress, by plugin or by embed code. Plandalf is separate: it adds a checkout button to the page and tags buyers in your audience.

How do I connect Mailchimp to a WordPress checkout page?

Put the Plandalf SDK and button in a Custom HTML block, connect Mailchimp under Automation, Marketplace with an API key, and build a sequence on Checkout Completed with Add Tags to Contact.

WordPress Mailchimp integration: will a paid sale subscribe the buyer?

New contacts get the status you choose in Status for New Contacts, which is Subscribed by default and can be Pending for double opt-in. Existing contacts keep the status they have.

Can a Mailchimp form on my WordPress page start a countdown?

Yes. The Contact Subscribed trigger starts a sequence when someone joins the audience, and the Enroll in Promo step starts that person's timer.

Checked October 26, 2026 against Plandalf's own setup guides and the vendor documentation: Mailchimp help: Add a Signup Form in WordPress.