To select one message, click it.
To select messages listed next to each other, click the first message, press and hold down the Shift key, and click the last message. The first, last, and all messages in between are selected.
To select messages that are not next to each other, click the first message. Press and hold down the Ctrl key, and then click each additional message you want to select.
When you want to print, delete, mark, or make other changes to a message, you must first select it. You can select a single message or a group of messages. When selecting a group of messages, they can be listed next to each other or be listed noncontiguously.
To deselect a message, click outside the selected message. To select all messages in a folder, first display the folder, and then open the Edit menu and click Select All.