Windows+Live+Mail+2011

In designing Windows 7, Microsoft famously cleaned house, eliminating assorted programs that were once built into the OS. Among them was Windows Mail (which, prior toVista, existed as Outlook Express). As a result, Windows 7 lacks an e-mail client out of the box.
 * Windows Live Mail 2011 **

Thankfully, Windows Mail lives on - you merely have to download it. Through the newly minted Windows Live Mail 2011, you can manage not only your mail accounts (as many of them as you want, including those from third-party services such as Gmail and Yahoo Mail), but also your contacts and calendar.

You do so though a stylish, intuitive Ribbon interface that's similar to the one in Outlook 2010; it is a vast improvement over the bland, awkward toolbar found in the last iteration of Windows Live Mail.

In other words, Windows Live Mail 2011 is kind of like Outlook Lite - or, maybe Outlook Express.