How can an HP6520 print an envelope through Stamps.com?
Stamps.com recognizes NCR Greeting envelopes which are 8-3/4" x 5-3/4" commonly used with 8-1/2" x 5-1/2" invitations (wedding, party, shower, etc.), but when trying to print postage on the 8-3/4" x 5-3/4" envelopes, the HP6520 shows a printer error of "Paper Mismatch".
Does anyone know what can be done to override this error message so that postage can be printed directly on this size envelopes?
Thank you!