It depends a lot on the person or company I'm contacting and why I'm contacting them. When contacting support I'll usually try to make it friendly and a bit fu

It depends a lot on the person or company I'm contacting and why I'm contacting them. When contacting support I'll usually try to make it friendly and a bit fun. I keep in mind there will be a person reading it who may frequently have to read and respond to frustrated or angry people, so if I can spend an extra 10 seconds to write something I think might make them smile I'll do it. And I try to use their name in any replies I write. That's a basic courtesy you should extend to anyone in any medium.