Home Forums Networks & Cross-Platform Networking Yahoo mail corrupted??

It's also saying it is offline when I check, and that all other mail apps are online. I tried to put it back online but nothing happens. Why would that be? Why does it stay off line when I click to put it online? I'm not contacting Yahoo, that's hopeless, and I don't have AppleCare anymore for this mac. Besides, they aren't very helpful as I see from these recent posts.