In a presentation that I occasionally give about the evolution of educational technology I have a slide that lists classic online discussion tools. On that slide I have a bullet point that reads, Group Email (which everyone hates). That slide always gets a chuckle from the audience because everyone has a colleague that uses “reply all” far more often than is necessary. If you use G Suite for Education, you avoid being that colleague by making a small change in your Gmail settings.

In Gmail settings you can set the default reply behavior to be “reply” instead of “reply all.” Making that change means that you never have to worry about accidentally sending a reply a group unless it is absolutely necessary for everyone in the group to see your reply. See my screenshot below for directions.