Surprising how few people mention an email addressed to oneself, particularly for those concerned about getting their thoughts out quickly. (Maybe a side effect of how many people use Gmail and it being slow and clunky?) Not saying it's brilliant by any means, but conceptually, it makes a certain amount of sense. Imagine having an assistant you can trust completely, and you don't have to worry about hurting their feelings or ever needing to stop to think whether you need to phrase things in a certain way. You'd lean on them for stuff like this, right? Now, instead of an assistant, it's just you explaining things to you.

If you've always got your mail client open then speed bumps are minimal, and you get optional titles, automatically dated entries, and search for "free".