If for some reason your account hasn't been upgraded, just log into your Hotmail or Windows Live Mail account, click Options, select Upgrade to Outlook.com and follow the instructions. Your messages, rules and so on will be brought over.
If you don't have an Outlook.com account, sign up.
Once you're logged into Outlook.com:
1. Click the Settings icon in the upper-right of the screen, and then select "More mail settings."
2. Under "Managing your account," click "Your email accounts" and then select "Add a send-and-receive account."
3. From the screen that appears, click "Advanced options." Here's where you enter the information you normally need to access your POP account, including the server address, port number and so on. If you don't have it, check with your email provider.
You can also check whatever mail client you normally use for the information. If you're using Outlook 2010, for instance, select File --> Info --> Account settings --> Account setting and click the E-mail tab. Double-click the account, and you'll find the necessary information.
Configuring Outlook.com to work with a POP3 account. Click to view larger image.
4. Make sure to pay attention to a setting that's easy to overlook: whether or not to leave copies of your mail messages on the server. If you're planning to have Windows Mail be your only mail client for accessing your POP-based mail, consider having the messages deleted from the server. However, if you're going to have multiple devices access the mail, make sure to leave the messages on the server. Click Next.
5. On the next screen, you'll be asked whether you want to create a new folder for the mail or keep it in your Outlook.com Inbox. Make your choice and select Next.
6. A verification email will be send to your POP account. Click that link. You'll be sent to a page on Outlook.com telling you that you're set up. You're now ready to tell Windows 8 Mail to get mail from Outlook.com (see below).
Configure Gmail to get POP3 mail
To configure Gmail to grab POP3 mail from an existing POP3 account:
1. In Gmail, click the gear icon on the upper-right corner of the screen and select Settings --> Accounts and Import --> Add a POP3 mail account you own.
2. On the screen that appears, enter your email address.
3. On the next screen, enter the information you normally need to access your POP account, including the server address, port number and so on. If you don't have it, check with your mail provider.