How to Integrate ActiveCampaign with Your Headless CMS

What is ActiveCampaign?

ActiveCampaign is a marketing automation platform for email marketing, audience segmentation, forms, automations, and sales follow-up. Marketing and advertising teams use it to send campaigns, score leads, trigger nurture sequences, and personalize messages based on contact data. It’s especially common with small and mid-market teams that need automation without building a full customer data platform.

Why integrate ActiveCampaign with a headless CMS?

When your campaign pages, lead magnets, email copy, and audience rules live in different tools, small mistakes pile up. A marketer updates the landing page headline but forgets the ActiveCampaign email. A new guide gets published, but the right tag doesn’t exist yet. A form sends every lead into the same automation, even though one person downloaded a paid ads benchmark and another signed up for a webinar.

Connecting ActiveCampaign to a headless CMS fixes that handoff. Your structured content can include the campaign slug, offer title, audience segment, ActiveCampaign list ID, tag ID, subject line, preheader, UTM values, and consent text. When that content is published or updated, a webhook or server-side function can send only the needed fields to ActiveCampaign, add the right tag to a contact, update a list subscription, or start the correct automation.

With Sanity, the Content Lake keeps that campaign data as typed JSON instead of page blobs. GROQ selects the exact fields ActiveCampaign needs, webhooks can fire on publish events, and Functions can run sync logic without a separate server. The trade-off is that you still need to design the data model and handle consent carefully. That’s a good thing. Marketing automation gets risky fast when every form and automation invents its own rules.

Architecture overview

A typical ActiveCampaign integration starts with structured campaign content in Sanity’s Content Lake. For example, a campaignOffer document can include title, slug, offer type, audience segment, ActiveCampaign list ID, ActiveCampaign tag ID, email subject, preheader, and consent copy. When the document is published, a Sanity webhook can fire with a GROQ filter such as _type == "campaignOffer" && !(_id in path("drafts.**")). The receiving endpoint, or a Sanity Function, then runs a GROQ query to fetch the fields ActiveCampaign needs, including joins across references like campaign, topic, product, or region. From there, the sync code calls ActiveCampaign’s REST API using the account API URL and API token from Settings > Developer. Common calls include POST /api/3/contact/sync to create or update a contact, POST /api/3/contactTags to apply an interest tag, and POST /api/3/contactLists to subscribe the contact to a list. ActiveCampaign then uses those tags, lists, and fields to trigger automations, send email campaigns, and route contacts into the right follow-up path. The end user sees the result as a relevant email, nurture sequence, or campaign message tied back to the content they interacted with.

Common use cases

Step-by-step integration

1. 1

   Set up ActiveCampaign access

   In ActiveCampaign, go to Settings > Developer and copy your API URL and API Key. Create the lists, tags, custom fields, and automations you want Sanity-driven events to use. You can fetch tag IDs with GET /api/3/tags and list IDs with GET /api/3/lists.

2. 2

   Install the integration dependencies

   Install the Sanity client with npm install @sanity/client. ActiveCampaign API v3 is REST-first, so Node 18+ fetch is enough for the example below. If your team uses an HTTP client like axios, keep the calls mapped to ActiveCampaign’s documented /api/3 endpoints.

3. 3

   Model campaign data in Sanity Studio

   Create schemas for campaignOffer, leadCapture, topic, and campaign if you need them. Useful fields include title, slug, audienceSegment, activeCampaignListId, activeCampaignTagId, emailSubject, preheader, consentText, and references to related offers or products.

4. 4

   Create the trigger

   For publish-based sync, add a Sanity webhook filtered to your campaign document type. For signup-based sync, post form submissions into a short-lived leadCapture document or your own API endpoint, then include the related Sanity offer ID. Use a webhook secret so only Sanity can call your handler.

5. 5

   Call ActiveCampaign’s API

   Use POST /api/3/contact/sync to create or update the contact, POST /api/3/contactLists to set list status, and POST /api/3/contactTags to apply the tag that starts the correct automation. Log ActiveCampaign response IDs so you can debug failed enrollments.

6. 6

   Test the frontend and automation path

   Publish one test offer, submit one test email address, and verify the contact activity in ActiveCampaign. Check the list subscription, tag, automation entry, email copy, UTM values, and unsubscribe or consent text before sending real traffic.

How Sanity + ActiveCampaign works

CMS approaches to ActiveCampaign

Keep building

Explore related integrations to complete your content stack.