Hook um_before_email_template_part

um_before_email_template_part.php

<?php

/**
 * Hook: um_before_email_template_part
 *
 * Type: action
 *
 * Description: Fires before email template loading.
 * May be used to display custom content above the main email message.
 *
 * @example https://github.com/ultimatemember/ultimatemember/blob/master/includes/core/class-mail.php#L218
 * @link    https://docs.ultimatemember.com/article/1058-umbeforeemailtemplatepart
 *
 * @package    um\core
 * @see        um\core\Mail::get_email_template()
 * @since      2.0
 * @deprecated since version 3.0
 *
 * @param string $template      Template key.
 * @param string $template_path Template location.
 * @param array  $args          Template settings.
 */
function my_before_email_template_part( $template, $template_path, $args ) {
	// your code here.
}
add_action( 'um_before_email_template_part', 'my_before_email_template_part', 10, 3 );