The best are the ones with 87 people on the TO: line with alphabetically increasing box names (username@). Often the set continues right into the CC: line as w

The best are the ones with 87 people on the TO: line with alphabetically increasing box names (username@). Often the set continues right into the CC: line as well. I cannot conceive of any legit use case that would result in that pattern, which it appears both O365 and Gmail are fine with.