Yeah. It really is that silly.|
As the three snails slowly amble around the tank, they occasionally come into range of an electronic reader, which attaches the e-mail message to the RFID chip. Go ahead. "Snail Mail" somebody. Can't be worse than the US Post Office.
The electronic messages are then physically carried around the tank by the snails until one of the gastropods passes close to a second reader.
It is then forwarded over the net in the usual way.