You might have heard of Mailbox: an iPhone-only app that claims to change the way we use email. Even if you want to use it right now, you can’t, unless you were among the first to reserve your spot in line. If you download the app today, you’re looking at an 800,000 person line. Orchestra (parent company of Mailbox) is doing this to ensure that their servers can handle the processing of millions of emails; Mailbox does some server-side action to compress your emails, strip out unnecessary stuff, and push it to your phone in an attempt to provide a fast email experience. And ...