Yours, Etc.: Origins and Uses of 8 Sign-Offs
(Or "message switching") A kind of message passing system where a complete message is received before any of it is passed on to the next node. This means that each message is using at most one interprocessor link at any time but intermediate nodes will require more storage buffers than under the alternative, wormhole routing.
E-mail transmission is an example of store and forward message passing.