All email going to spam folder

Since yesterday all of my email is going to my spam folder.  Even when I add an email address fo 'Keep', a copy goes to the spam folder even while one is in my inbox.  I've disabled all of my filters that would send emails to spam.  I normally use Outlook to filter but this happens even when Outlook is not active.   As I said this only started yesterday and the only changes I made yesterday was to add some filters (which are now diabled) and the mail going to spam was not in a filter.