How about "Start off nice?"

I’ve found it interesting how many people start off email exchanges in an insulting, aggressive tone, even though what they are looking for is a simple bit of customer service or an answer. I don’t speak to people I don’t know like that and expect them to respond, and I wouldn’t expect it if I sent a hateful email either. Guess it’s pretty common.

Link courtesy of The Editor’s Log, over at The (Greensboro) News & Record.