How do I get my Yahoo back after installing Yosemite?

[iMore Question]

I installed Yosemite and everything came back as before the installation except Yahoo. Its icon still appears on my dock, but has a line through it. Help, help as it's my main email address out there and I don't want to lose it or all the history that's attached to it.

 

[phreddyl]

Did you access it via webmail? If it was just a safari shortcut all your stuff should still be available on the web


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[metllicamilitia]

Does Yahoo have a Yosemite specific update? That's the only thing I can think of for a slash through the current icon.