How many times have you gone to send an email, only to be distracted or even derailed by something that you found in your Inbox? I found a solution which is completely free, integrates completely with OS X, and which guarantees that it won't happen to me again. I even found a (partial) solution for iOS devices as well.
The Problem
One night around 11 p.m. I remembered that I needed to send an email to someone so it would be there for them first thing in the morning, so I launched Gmail (actually Mailplane) as I started to formulate the message in my head as I waited for it to load. Then it happened. I saw a message from someone that I wished I hadn't seen. I could have tried to ignore it, but my brain isn't fooled that easily.