formcierge_email_headers
Filter
Since v1.0.0
Add custom headers to notification emails such as Reply-To, BCC, or X- tracking headers.
Parameters
$headers
array
Array of header strings, e.g. ["Reply-To: name@example.com"].
$form_id
int
The form ID.
includes/Core/Mailer.php
Basic Usage
add_filter( 'formcierge_email_headers', function ( $headers, $form_id ) {
$headers[] = 'Reply-To: support@mysite.com';
return $headers;
}, 10, 2 );