Snail Mail

From Guidevines

Snail mail is a common internet term for "regular mail" (or, in the United States, mail sent via the US Post Office. Many traditional publishers will only accept snail mail submissions, though a growing number of markets now consider electronic submissions. If "e-subs" are not specified, then writers should assume the market accepts snail mail submissions only.

Note US Post Office postage rate increase in May 2007.