Filtering your Gmail
Filters, like Labels allow you to organize your Gmail. You can set up rules that will automatically categorize or file messages depending on custom criteria you specify. For example, maybe you want emails from your Mom to be labeled “Family”, or you want emails sent from your boss to go directly in the Trash.
In Gmail’s search box, click on the drop-down arrow on the right. First find the messages you want to label or file: Type in a name or email address in the From box, and/or a word in the Subject box (i.e. Receipt, Itinerary). Then click on the “Create filter with this search” link. Now choose what you want to do with the messages you’ve specified. You have choices such as: Archive the message, Star it, Apply a label, Delete it, etc. Chose some actions and click “Create Filter”. If you want to apply this action to the matching conversations Gmail just found (see your Inbox), check that box first.