Abstract: A manually-operated moistener, to which a mail piece is supplied lying flat with a down-turned but not yet adhered flap on the underside of the envelope, has a blade in an upper part and a moistener rocker that can be opened upwardly and can be rotated with at least one locking contour on an associated hinge on the blade so as to be spring-supported as well as locked in a maintenance position. The upper part and a lower part of the moistener are connected by connection elements that can be detached only from above. An antibacterial upper moistening element is disposed in the upper part with a clamping region thereof in a clamping groove of the moistener rocker. A water transfer element protrudes into the lower part, which element is curved at its other, upper end. Both possess a shared contact surface for water transfer that is enlarged by the curvature.

Abstract: A mail processing system has an envelope-separating apparatus with a moistening apparatus for moistening and discharging an envelope in an open state. A franking device is disposed downstream of the envelope-separating apparatus and is optionally provided with weighing scales. In the franking device a moistened glued edge of the envelope flap is pressed against the envelope pocket by pressure-exerting elements also serving for transporting the envelope. A closing module is disposed downstream of the franking device and has a closing-roller pair that is configured in a manner adapted for mixed-mail operation. Because the entire sequence in the franking device takes place between the stages where the glued edge is moistened and the envelope is closed, sufficient time is gained, even at high transporting speeds, in order for the glue to begin to dissolve sufficiently and for the envelope to be reliably closed.