How do I move a message from my Inbox to a label?
If you’ve already created the label, select the message in you Inbox or open it, and then select a label in the Move to drop-down list at the top of your Mail window. If you haven’t yet created the label you want, select Create new instead.
If you want to move a message to multiple labels at once, select the message in your Inbox or open it, and then select the labels in the Labels drop-down list at the top of your Mail window. Then click on the Label to move it.