Thanks for the tip!
But I already got it working by adding the following code to the function.php of the plugin:
add_action(‘wpcf7_mail_sent’, ‘your_wpcf7_mail_sent_function’);
function your_wpcf7_mail_sent_function($contact_form) {
$title = $contact_form->title;
$submission = WPCF7_Submission::get_instance();
$posted_data = $submission->get_posted_data();
if (‘Form name’==$title) {
MY PHP CODE!!!
}
}
