I sent a passive agressive reply to a email turning me down for a job. It was about the ridicilously long psychological assessment they made me do (524 nearly identical questions, took me 1,5 hours+) on the basis of which they rejected me. I pointed out that the length was insane and unnecessary and that it's weird to want just a narrow group of personalities (they were going to hire a group of trainees). I already knew I was going to vent to them about this before I was rejected so I this wasn't an impulsive thing to being rejected (about which I'm actually relieved). Still, it's a really basic don't in job searching. On the other hand, biting back for a change instead of crawling in a corner feeling like a useless miserable loser also feels great.