Visit http://www.boredomresearch.net/rsm/index.html if you´re interested in snail mail transportation.Muriel, Austin and Cecil are snails for the electronic age.
The gastropods have been fitted with equipment to allow them to send e-mails on behalf of visitors to a website.
Instead of instantaneous communication, sent messages will travel at 0.03mph (0.05km/h) and could take days, weeks or even months to arrive. [...]
http://news.bbc.co.uk/2/hi/technology/7458531.stm

regards
Michael