ActiveCampaign + Klaviyo integration

Plandalf does not sync ActiveCampaign with Klaviyo and has no native step for either. It reaches both with Send Webhook calls to their APIs, so one sequence can write a buyer to each, and an automation in either tool can post to a Plandalf catch URL.

1. Start from the purchase

   In Automation, My Sequences, create a sequence on Plandalf, Checkout Completed. Choose the offer and a sample checkout on the Test tab.

2. Add the ActiveCampaign sync

   Add Send Webhook, method POST, to https://youraccountname.api-us1.com/api/3/contact/sync. Add the header Api-Token with your key, and send a contact with email, firstName and lastName.

3. Add the Klaviyo import

   Add Send Webhook, method POST, to Klaviyo's profile import. Set the Authorization header to Klaviyo-API-Key followed by your private key, a revision header and Content-Type: application/vnd.api+json.

4. Read both status codes

   Run each test. ActiveCampaign returns 201 for a new contact and 200 for an update; Klaviyo accepts the import. Open both tools to see the record.

5. Decide who owns consent

   Pick which tool sends marketing emails to buyers first. Keep the other as a record only until you have rebuilt its automations.

• Plandalf has neither app as a connection. Both API credentials sit in Send Webhook headers, and the receiving side has 30 seconds to answer.
• ActiveCampaign's sync call changes only fields you send, and custom fields go in as a fieldValues list keyed by field ID, so look the IDs up first.
• Klaviyo rate limits profile import to a burst of 75 a second and 750 a minute, with a 100KB payload cap.
• Check which ActiveCampaign plan includes the Webhook automation action, and note that Klaviyo needs two-step authentication for anyone adding a flow webhook.
• A contact unsubscribed in one tool stays subscribed in the other until you build the sequence that tells it.

Does ActiveCampaign integrate with Klaviyo?

Plandalf does not connect them. It can write the same buyer to each using Send Webhook calls. Check each vendor's own integrations list for a direct sync.

How do I connect ActiveCampaign to Klaviyo for purchases?

Build a Plandalf sequence on Checkout Completed with two Send Webhook steps, one to ActiveCampaign's contact sync and one to Klaviyo's profile import. The headers are listed above.

Can I migrate from ActiveCampaign to Klaviyo with Plandalf?

It covers new purchases during the overlap, not the existing contacts. Use each tool's import for the back catalogue.

Can ActiveCampaign send a Plandalf sequence a contact?

Yes, with a Webhook action in an automation that posts to a Webhook Trigger catch URL. Test the sample first because the payload is form-encoded.

Checked October 26, 2026 against Plandalf's own setup guides and the vendor documentation: ActiveCampaign API: sync a contact's data, Klaviyo API: create or update profile (profile import), Klaviyo: how to add a webhook action to a flow.