Abstract: An envelope filling machine including conveyor apparatus for transporting individual envelopes from a feed station to a filling station for receiving an insert therein. Positioned intermediate the feed and the filling stations there is provided a spreading device for opening the mouth of the envelope and a dampener device for moistening the gummed flap of the envelope. The conveyor apparatus is arranged to transport an envelope to the filling station in a feeding direction in a first transport plane and, in response to completion of an envelope stuffing operation, the conveyor apparatus is pivoted into a second transport plane inclined downwardly towards the feed station.