Why we're obsessed — It's as easy to use as this: "open it up, type, send, and you've just emailed yourself. Superbasic and old-school, but it can't be beat for quickly sending yourself a reminder," said POPSUGAR studios president David Grant. Emailing yourself is *still* the most efficient way to keep track of notes throughout the day for some people, especially because Gmail has perfected the art of email search. Plus, the app is completely optimized for speed.