I use the name in the first line when there is some people in the cc (or bcc :) ) but it's a request for someone in particular: > Hi John! > Can you send me X

I use the name in the first line when there is some people in the cc (or bcc :) ) but it's a request for someone in particular: > Hi John! > Can you send me X for the Y project? In particular when the people in the cc (or bcc :) ) don't have the info about X but is interested in Y. (I use also "Hi everyone!" when I want to make it super clear that the email has been sent to a lot of persons.)