Have you tried Yahoo's most recent New Mail Beta?

Reason I ask is I and many others have been invited to give it a spin. I don't care for it but may as well get used to it because as most of you know sooner than we want to we'll all be forced to use it, with all its glory and glitches.

BUT apparently a lot of users answering questions here didn't get the invite.

Scrolling has yet to be enabled for the Settings menu (under the gear icon), so if you want to 'Switch back to classic mail,' the option is hidden at the very bottom of the list and you'll need to use the End key, page down key, or down arrow key on your keyboard.