snail-mail

snail-mail
 n.

   Paper mail, as opposed to electronic. Sometimes written as the single
   word `SnailMail'. One's postal address is, correspondingly, a snail
   address. Derives from earlier coinage `USnail' (from `U.S. Mail'), for
   which there have even been parody posters and stamps made. Also (less
   commonly) called P-mail, from `paper mail' or `physical mail'. Oppose
   {email}.

   (Note: Actual garden snails progress at about 10 meters per hour,
   which is about 25-50 times slower than the U.K.'s Royal Mail;
   comparable measurements for other countries have not yet been made.
   More biologically apt terms might be "sloth-mail" at 250 m/hr or
   "tortoise-mail" at 270 m/hr. See
   http://www.newscientist.com/lastword/answers/789communication.jsp?tp=c
   ommunication for details.)