form-builder-conditional-fields-option-1.php

function custom_contact_recipient( $mail_to, $form_id, $form_data ) {
	// Enter your form ID here
	if ( $form_id == 'add_post_form' ) {
	// These are the field conditions. We enter the field ID here and the expected value
		if ( $form_data['department'] == 'Sales' ) {
			$mail_to = '[email protected]';
		} else if ( $form_data['department'] == 'Support' ) {
			$mail_to = '[email protected]';
		}
	}
	return $mail_to;
}