Active Campaign is an email marketing service. Typical functions you'd want to trigger from your website include;
In Active Campaign, your API key can be found in your account on the Settings page under the "Developer" tab. Each user in your ActiveCampaign account has their own unique API key.
In your Webflow Logic flow, create a Make HTTP Request block where you want this step to occur.
Use these settings;
IMPORTANT: Not actually tested, this is based on the docs. Let me know if you try it, and any problems you're encountering.
From the Active Campaign API docs;
The API is accessed using a base URL that is specific to your account. In the examples provided in the API documentation, the following URL is used as a placeholder;
youraccountname.api-us1.com
You must replace these with your account-specific API base URL, which can be found in your account on the My Settings page under the "Developer" tab.
In addition, URL paths should begin with /api/3 to specify version 3 of the API.
Generally, the URL will be in the form ;
https://<your-account>.api-us1.com/api/3/<resource>
Known as Create a Contact in Active Campaign terminology.
The request body will be JSON.
The minimum you need to add a subscriber is the email, e.g;
{
"contact": {
"email": "(insert email field here)"
}
}
See the API documentation for additional fields you can add, e.g. name, phone, and custom field values.