Abstract: The present invention allows for producing an envelope by a process in which the envelope is die cut from a continuous paper web, folded in four directions to produce four flaps, glued such that the two side flaps are glued to the bottom flap and the top flap is glued to the bottom flap around the contnets of the envelope. The present invention also allows for in-line printing, stuffing and sealing of the contents of the envelope from plurality of high speed webs of paper for mass mailings and the like. The preesnt invention allows for the in-line making of an envelope by high speed paper web that will produce a four flap envelope with one of the flaps of the envelope, corresponding to one of the directions of folding in the process, to be folded in the opposite direction of the web.