You can download it as part of the Windows Live Essentials pack (you don’t need to install all of the applications in the pack if you don’t want to). Windows Live Mail is one email client that works with Exchange Server 2010 POP3. Even though you can make things a little easier by publishing the POP3 client settings where users can find them they will still need to set up their email client with the correct settings. When you’re deploying POP3 for Exchange Server 2010 you’ll generally need to configure the email client settings manually.
