[gruez]

Do envelopes that were printed with a postage meter not get postmarked? My impression is that the stamp the postage meter puts on is just proof of payment (ie. instead of a stamp), but at the sorting facility they still apply a postmark which has the real date it arrived at the facility.

[joe5150]

generally no; only mail with stamps on it will end up with a postmark cancellation most of the time.