MAIL STAMPING APPARATUS AND METHOD

Method and apparatus for the cancellation of stamps and printing of pre-programmable messages on envelopes. The apparatus comprises structure for feeding a plurality of envelopes in singulated manner to a sensing assembly, which detects the leading and top edges of the envelope and trigger printing structure which cancels the stamp and/or prints on a pre-programmable message. The apparatus and method is of value when envelopes of different sizes, generally having the stamp in a common region, i.e. upper right-hand corner, as part of the plurality of envelopes are present.