Yahoo mail classic has become unusable, because it now senses when you have moved away to another tab (in Firefox) and shuts down the letter you were writing — probably as a security precaution. When you move back to the tab, say, after having looked up the spelling of a word, you find your message-in-progress is gone, and not even a back-click will bring it back.

So I am trying the “new” layout for Yahoo mail and hopefully that will be all I need to do. I have a gmail account lying in wait, if I need it.