In the Pro version there is a WordPress hook which you can use to run your own PHP functions – the hook is called: cf7pp_payment_successful
This hook is executed in includes/payments/stripe_handler.php and includes/payments/paypal_handler.php
This runs for both PayPal & Stripe payments.
Hook:
do_action('cf7pp_payment_successful', $post_id, $txn_id);
Example:
function test_function($post_id, $tnx_id) {
}
add_action("cf7pp_payment_successful", "test_function", 10, 2);