Random pointless observation.
I accidentally left AOL mail open this morning while I was cooking and eating. The inbox bell kept ringing over and over for several minutes, and then it stopped. All the items were related-looking spam, not meaningful emails. I’d previously noticed that spam seemed to pile up at a particular time, but hadn’t heard the piling.
Conclusion: Most spam must be passing through one server, which concentrates its output at 7AM local time for each “valued recipient”.
