Some Apple iCloud services are currently down, the iCloud.com website is down, and iCloud Mail won't load. There are numerous reports on Twitter and other social media platforms, and Apple's system status page states that some iCloud Mail users may not be able to send, receive, or access their messages.
Apple's system status page also lists an issue with iCloud web apps and reports that some users are unable to sign in to iCloud.com.
We will update this article when the issue is resolved and Apple iCloud services are running.
Update: Apple reports that the issue has been resolved as of 4:38 p.m. Eastern Time.