Independent by design
EnvelopeLogic is not affiliated with or endorsed by ISO, USPS, Royal Mail, the Envelope Manufacturers Association, an envelope manufacturer or a stationery retailer. Third-party names identify formats or sources only.
Publisher disclosure
About EnvelopeLogic
EnvelopeLogic is an independent envelope reference and matching website operated by Maple Web Group.
Editorial responsibility
Maple Web Group is responsible for the original presentation, deterministic calculations, source selection, checked dates and corrections. Dimensions remain subject to the clearly stated source and scope.
What the site does not do
EnvelopeLogic does not sell envelopes, accept uploads, provide accounts, store projects, quote postage, guarantee supplier fit or determine postal compliance.