On the emails, I'd move them from your sent or trash folders to one marked "important" or something along those lines. As for the snake, that's a sticky situation. I would probably send another email asking if he received the previous one, mentioning that the weather is becoming too cold to ship and if he doesn't respond, he'll be forced to forfeit his payments thus far. In my opinion, you've already gone above and beyond. I know others may say you've fulfilled your obligations in warning him, but I'm a softy and would probably give one more chance lol.