How about I send out an angry email to my lazy group members?
Why would you send an angry email?
Because they don't know how to work hard or set some deadlines for themselves.
It's wrong to send out angry emails. You should be more patient with your group.
They are just too slow, my email did not kill them, they are just being dramatic.
It might not hurt them but they may not want to work with you again. You shouldn't send out angry emails because of the way you are feeling. Communication is key to getting along in a group.