How many is a few? If you've have 500 servers for a long time, and a new script discovers 5% have a failure and sends 25 emails at the same time, I can see why

How many is a few? If you've have 500 servers for a long time, and a new script discovers 5% have a failure and sends 25 emails at the same time, I can see why Hetzner might want a single email. Numbers made up, but you get the idea.