Adding a Custom Filter when using Other SMTP Setting

/* Adding a Custom Filter when using Other SMTP Setting  

 * 

 * Original doc: https://wpmailsmtp.com/docs/how-to-set-up-the-other-smtp-mailer-in-wp-mail-smtp/

*/

add_filter( 'wp_mail_smtp_custom_options', function( $phpmailer ) {

    $phpmailer->AuthType = 'LOGIN';

    return $phpmailer;

} );