52. Zapier/Make Integration Deep Dive | Form Forge

Detailed setup for connecting Form Forge to Zapier and Make (Integromat).

Zapier Setup

Create a new Zap with a Webhooks by Zapier trigger (select “Catch Hook”)
Zapier generates a URL: https://hooks.zapier.com/hooks/catch/123456/abcdef/
Paste this URL into the Form Forge “Webhook URL” field
Submit a test form
In Zapier, click “Test Trigger” to capture the data
Map fields in your action step:

Name:    {{fields__field_1__value}}
Email:   {{fields__field_2__value}}
Message: {{fields__field_3__value}}

Make (Integromat) Setup

Create a new scenario with a Custom Webhook module
Copy the generated URL (e.g., https://hook.eu1.make.com/abcdef123)
Paste into Form Forge settings and submit a test form
Access fields: fields.field_1.value

n8n Setup

Create a Webhook node (set method to POST)
Copy the production URL
Access fields: {{ $json.fields.field_1.value }}

{
  "name": "{{ $json.fields.field_1.value }}",
  "email": "{{ $json.fields.field_2.value }}",
  "form": "{{ $json.form_title }}",
  "submitted_at": "{{ $json.timestamp }}"
}

Verifying Webhook Payloads

Add HMAC authentication on the sender side and verify on the receiver:

// Sender (Form Forge site)
add_filter( 'formforge_webhook_payload', function( $payload ) {
    $secret = 'your-shared-secret';
    $payload['signature'] = hash_hmac( 'sha256', wp_json_encode( $payload['fields'] ), $secret );
    return $payload;
} );

// Receiver (your custom endpoint)
$body = file_get_contents( 'php://input' );
$data = json_decode( $body, true );
$expected = hash_hmac( 'sha256', json_encode( $data['fields'] ), 'your-shared-secret' );
if ( ! hash_equals( $expected, $data['signature'] ) ) {
    http_response_code( 401 );
    die( 'Invalid signature' );
}

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