Go to Metform=> Settings=> Newsletter Integration=> Active Campaign=> Click on the Get API to get API URL and API Key

It will redirect you to the Active Campaign platform.

Create an Active Campaign Account and Log In with your Email and Password

Now Go to Settings from Active Campaign Option Panel

Click on Developer=> Copy the API URL and API Key

Save Them for The Next Step

Again, Go to MetForm=> Settings=> Newsletter Integration=> Active Campaign

Paste the API URL and API Key Here

Create a Form

• Just Drag and Drop three Field Named: First Name(Listing), Last Name(Listing), Email
• Click on Update

Click on Form Settings=>Integration

Enable Active Campaign

Now You Will See Two Options – Active Campaign List ID and Active Campaign Tag ID

Hit The Refresh Button Under Both of The Options to Load List

Hit the ‘Save Changes’ Button

• Go to Site=> Fill the Form and Click on Submit Button

Now Go to ActiveCampaign=> Contacts=> You can see new Subscriber will appeared here

✅ Also, check how to create newsletter form in WordPress.