Definitions for "Snail mail"
For those used to the almost instantaneous delivery of electronic mail, it is the term used for the more traditional pace of the US Postal Service.
This simply refers to physical mail that travels postal service, as opposed to e-mail. The slow-moving snail is a reference to the relative speed of physical mail vs. the seemingly instantaneous speed of electronic mail.
the old days of paper mail and the US Postal Service
Keywords:  sneakernet, sneezer
sneakernet sneezer