The Collaborative International Dictionary of English v.0.48:

Forwarder \For"ward*er\, n.
   1. One who forwards or promotes; a promoter. --Udall.
      [1913 Webster]

   2. One who sends forward anything; specifically, (Com.) one
      who transmits goods; a forwarding merchant, such as a
      freight forwarder.
      [1913 Webster +PJC]

   3. (Bookbinding) One employed in forwarding.
      [1913 Webster]