The simplest way to view an e‑mail message in Windows Mail is to read it in the Preview pane, where you can view the message's contents without opening the message in a separate window. Or, if you want to see a larger portion of the message without scrolling, you can open it in a separate window instead.
Open Windows Mail by clicking the Start button , clicking All Programs, and then clicking Windows Mail.
Click the mail folder (such as Inbox) that contains the messages you want to read.
Do one of the following:
To view the message in the Preview pane, click the message in the message list.
To view the message in a separate window, double-click the message in the message list.
When viewing messages in a separate window, you can click the Previous and Next buttons to move to the previous or next message.