It's not the Gmail-level volume, but it's an email per day either. And yet there is still very few negatives, so it is possible to go through them by hand. Vast

It's not the Gmail-level volume, but it's an email per day either. And yet there is still very few negatives, so it is possible to go through them by hand. Vast majority falls into "fafafa" and "test@test" category. The remainder is typos, e.g. commas instead of periods.