wpmem_notify_addr

add_filter( 'wpmem_notify_addr', 'my_admin_email' );
 
function my_admin_email( $email ) {
 
    // single email example
    $email = 'notify@mydomain.com';
     
    // multiple emails example
    // $email = 'notify1@mydomain.com, notify2@mydomain.com';
     
    // take the default and append a second address to it example:
    // $email = $email . ', notify2@mydomain.com';
     
    // return the result
    return $email;
}