Currently Being ModeratedSep 21, 2012 9:26 AM (in response to virginiafrompunta gorda)
I'm having the same problem, except I'm not receiving ANY email (not even from businesses etc). This has been going on for a week now. I had not upgraded my OS, so that cannot be the cause. It was just suddenly not receiving emails. I can send, but cannot receive. I can log in to icloud.com but when I select MAIL, it will not load, and says application not availble. Today, I opened Mail Preferences and added a email account using my same email address (firstname.lastname@example.org) and it worked fine, gathered all my missing emails. But it was using the name iCloud instead of my name, and created a new mailbox for all the mail. I want to use my mailbox I've used for years...so I deleted it. It was just a test, but don't really know what was accomplished because my original email still does not receive mail.
Last week I had sent a msg to Apple Support about the problem, and got a reply...so I think they know there is a problem. Perhaps they just don't know what the solution is so will not acknowledge the issue yet.
I'm still waiting for a solution, too. Extremely inconvenient, most of us rely heavily on email.