When you are logged in to Messenger but your status is set as anything, other than Online, like say, Busy or Away, you can enable this add-in to auto-reply to messages sent to you with very simple verbiage, like: “I’m currently away from my computer but I will get back to you as soon as possible”.
It is a great way to be courteous with the people, and also a time saver since you can customize the messages to say whatever you want.

Windows Live Messenger Auto-Reply 1.2, allows you to customize auto-reply messages for the following status:
- Away
- Busy
- Be Right Back
- In a Call
- Out To lunch
If you have liked this post, you might want to check out some more, on topics like Addons, Messenger.