The Free On-line Dictionary of Computing (30 December 2018):

store and forward
message switching

    (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.

   (1995-02-16)