emailwindowswindows-live-mail
I use the Windows Live Mail app (part of Windows Live Essentials) as my default mail app.
Unfortunately it doesn't notify me when I get a new mail. Are there any apps that can do this? The important thing is that it should use as little Internet as possible.
check out this forum, has a similar question...
http://www.eggheadcafe.com/software/aspnet/35474649/synchronize-mail-between.aspx
basically put, it recommends that you use Windows Live Sync to sync your message folder between your two Windows machines.
In WLM, go to Tools>Safety Options>Security Tab.
If you don't see the tools menu see this article http://www.webdevelopersnotes.com/tips/windows_live_mail/windows-live-mail-toolbar.php
In there there will be a tick box about not allowing to save or open attacments that could be viruses, untick it, hit OK, see if you can open them.
Just so you know, you are know able to open potentially harmful attachments that could introduce a virus into your system, be careful what you open.
Best Answer
Windows Live Mail 2011 (and I believe every prior version) has this functionality by default. Click on the area in the screenshot that is dark blue (upper left corner), and click Options>Mail>General tab. Select "Play sound when new messages arrive". The envelope notification should always be on.
One more thing it may be: Make sure your status bar is enabled in View>Status bar.