Please just don't. It's ridiculously childish. I have a friend who does this and I'm embarrassed to be seen with him when he does it.
Just win, or lose.
Repeat.
Wow! It seems that umm, everyone sends mail. Good lord.
When I was playing COD I never saw a single message. But in Destiny we are sending messages all the time. Wonder why that is.
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When people lag a lot, I message them politely. I found that they mostly don´t even know it. This prevents people from continuing without knowing and getting reported for bad connection.