For years I've been using Mac I never found a use for Apple Mail application (Microsoft didn't support this service for free and Gmail is just too simple and unique making you don't need to use it with any application).
Few months ago I found a tweak to run and import Windows Live mail directly to Apple Mail which made me use it frequently, though it has some flaws. It won't update your actual account (deleting an email won't remove it from your account in Windows Live server).
However, looks like Microsoft finally decided to follow the herd and bring that service up for free with POP3. It's very useful as I only have to check emails without having to wait for the attachments to load/download (it downloads everything simultaneously) though there's still no effect on the server itself when managing emails.
Setting up your Windows Live email with this method is quite easy...
- Open Apple Mail and go to Preferences then go to accounts.
- Add a new account "+".
Type your name, email, password and click "Create".
- Incoming server (POP): pop3.live.com
Your username must be your email as firstname.lastname@example.org
- Outgoing Server: smtp.live.com
Use your email as username and type your password in authentication box.
Now your email is configured. All you have to do is wait for Mail to import all your emails (takes a while depending on how many emails you have) then select them all and mark them as read or simply remove them and keep mail running to check for new emails.