How to Add Bcc: Recipients to an Email in Yahoo! Mail

Like ever new raindrops on the tiny window, the ink moves slowly — but surely deforming the letters. And the blotting paper has not been invented yet.
What was the 1764 writer to do? Shake the salt dispenser, of course. Inside the salt shaker — really a pounce box — was often indeed salt, maybe sand or glass, ground fine enough in any case to take up excess ink.
Today, we know emails carry excess ink in the form of five dozen email address in the To: or Cc: field. Let's shake some electronic pounce at them:
›› Using the "Bcc:" line, you can send an email to multiple recipients in Yahoo! Mail without revealing their addresses.