Inserter with a stuffing assembly for each time inserting a document into an envelope in the stuffing position. In the operating position, a document feeder or the exit for outputting finished mail items is situated at the front side of the housing, and the envelope holder is accessible exclusively from a rear side of the housing. The housing has at least one foot or feet for supporting the housing via the foot or feet with respect to a supporting surface on which the apparatus stands. The foot is or, respectively, feet are arranged for allowing the rotation of the housing between the operating position and a loading position while the housing rests on the supporting surface via the foot or feet, and for keeping the housing supported in said positions.