The Roman people as a whole was divided in six classes. When Servius Tullius concocted the schema (primarily to find out who could pay for the army), he called the first class — most wealthy — men the classici.
Hence "classic" for anything first-rate and long-lasting — like the classic Yahoo! Mail, of course, to which you can return easily from the newer version:
›› You want to try the all-new Yahoo! Mail but are unsure if you can switch back? You want to find out what makes Yahoo! Mail Classic, well, classic but don't want to give up on the newer version entirely? Here's how to switch back and forth between Yahoo! Mail and Yahoo! Mail Classic.

The sun does not go higher than the zenith. In most of the world, it does not even come near, but in the tropics, the sun looks down, from directly above, on picturesque fish and curious divers — and photos of picturesque fish taken by curious divers for colorful emails:
›› All the colorful exuberance of the tropical sea for your emails! (IncrediMail)

Talk a lot, to Spanish, and you may be accused, in Spanish, of speaking through your elbows: "¡Habla por los codos!" Do you, perhaps, know why?
In any event, write and send a lot, in Gmail, by elbowing Send & Archive; no accusations:
›› Clicking "Send" and then "Archive" all the time when composing replies in Gmail? Combine the two buttons into one and click just once to send the email and archive the thread with this Gmail feature.

It's December 19, 2009 -- on a Julian calendar, which, over time, gains more and more on the seasons. Its average year is a wee bit long.
It's 19 hours from now -- in Windows Live Hotmail, if it uses a time zone different from your watch's. Its errors won't accumulate over the years, but the fix is also easier than messing with days, months, stars and holidays:
›› Times are goofy in your email? It might be the Windows Live Hotmail time zone set wrongly. Here's how to fix it.