For the last few days I’ve had constant problems with icloud mail servers timing out, so that messages aren’t sent or moved to trash or imap mailboxes right away. Normal behavior will resume some time later on. Nothing has changed with my system.
I called in an iCloud login problem before the Apple status page updated and the helpful first line agent insisted that I must restart my computer. I insisted that she should [be intelligent enough to] forward my report.
I have no idea if she did so, but since the problem existed on multiple browsers and multiple systems, I did not restart my production system. The Apple status page update occurred about 30 minutes later.