I have long dreamt of a way to write an email now and schedule it to be sent at a later date. Suppose I'm checking my email and a new message arrives right then. I check it, and hooray, I can respond to it with a single sentence and get it out of my inbox. But wait! I don't want the recipient to start expecting 1-minute turnarounds to their emails. Friends know this happens from time to time, but I don't need the registrar's office to think this is how I roll. However, I can't just let the email sit there, or worse I might forget to mark it as unread, or forget to "star" it.
Well, with Boomerang for Gmail I can write the insta-reply, but turn it into a delayed response: