Mr. Snail carries mail on his back in a pail.
He moves slowly down the trail.
That’s why his mail is called Snail Mail.
 
Or you can send your mail by Air mail.
Just put your mail in Mr. Quail’s pail.
Then watch Mr. Quail sail with the mail along the trail.
He delivers the mail without fail.
That’s why he’s called the Air Mail Quail.