Last time I looked at spam rate it dipped Mon-Tues then picked up again and tended to be US eastern time
Interesting, my graphs over the past 3 weeks tend to peak on Weds, roll off steadily hitting a low on Sunday, then ramp back up Monday and Tuesday towards the peak. However, the total variance between days is only 25% less spam on the lowest day relative to the highest day. I guess spammers tend to take long weekends. :)
YSMV (Your Spammers May Vary)
By comparison total mail volume follows a similar trend with Weds being a peak and slow roll-offs in either direction, but Saturday and Sunday are deeply dropped off relative to M-F (50% drop off for sat/sun). Not really surprising there.
