What's going on with Mail this morning?

Is anyone else having problems accessing Mail? I can't access it on iCloud.com or my iPhone. (Not at home to check my laptop.) My internet connection is not the issue; that's working fine on my work computer and on my phone. I'm not getting any password error messages. On my iPhone I'm not getting any error messages, but nothing happens and email won't come in. On iCloud, I get the following error message: "Cannot load Mail. Help Apple improve iCloud by reporting this problem." No problems accessing my Calendar or Contacts, just Mail. Any suggestions on things I can do to fix it, or is this an Apple issue with servers or something?