No specific info about version 2.1. Please visit the main page of Howard E-Mail Notifier on Software Informer.
It can be used to monitor multiple Gmail and Google Apps Mail accounts.
It checks your mail, Twitter and RSS feeds and displays notifications.
Notify area and alerts you to notifications in the Google+ social network.
Displays Outlook unread mail on desktop or logon screen.
Wake Up E-mail Notifier is a powerful software that you can get it for free.
Notifies you when you have new mail at your Gmail inbox.