If you want to perform bulk operations on your emails in GMail, GMail has a cool trick that allows you to select multiple messages easily. Instead of having to click the checkbox next to each message, you can check message in bulk. To do this, check the first message you want, then hold the Shift key and hold the last message you want. When you do this, it will check all of the checkboxes between the first and the second click. You can also use this to unselect a range of checkboxes.