Web Worker Daily details how Gmail's canned responses work wonderfully with smart filters to let you auto-respond to certain people, or emails with certain keywords, when you're on vacation or too busy to reply right away. By drafting a response and saving it as a "Canned" item, you can have it sent in reply to mail sent by certain addresses, or fitting any of Gmail's other super-powered filters. So rather than turning on a blanket "Hi, I'll be away ..." auto-responder, for instance, you could create a canned response that goes out to everybody except clients or employers who you don't want to seem distant and detached from. Or you could just simply let a few friends and family into your vacation email box without bothering them with your boilerplate text. WWD also notes that Canned Responses gives you the ability to quickly attach multiple signatures to Gmail—although that's something you can handle with a Firefox extension—and knock out quick, templated messages about contracts, DMCA notices, or whatever notes you regularly send with just a few changed variables. How are you using Canned Responses to save yourself time on email? What's your killer filter to knock down repetitive messages? Share it with the class below.