Permitted use
You may use the site normally for personal or business reference. Do not interfere with the service, attempt unauthorised access, introduce malicious code, scrape abusively, misrepresent results or imply endorsement or certification.
Terms
Terms and disclaimer
EnvelopeLogic provides general dimensional reference and transparent geometric guidance. It does not guarantee physical fit, product suitability, postage, machinability or legal compliance.
Fit and postal boundary
Results depend on entered values and nominal external dimensions. Verify actual internal space, construction, contents, folds, thickness, supplier tolerances and current postal rules with the relevant competent party.
Intellectual property
Original EnvelopeLogic text, software, calculations, tables, diagrams, design and brand material are protected by applicable rights. Third-party format names, marks, links and source material remain subject to their owners’ rights.
Accuracy, liability and law
Reasonable care is taken, but complete accuracy, suitability and uninterrupted availability are not guaranteed. Responsibility and liability remain subject to applicable law, and nothing excludes liability where doing so would be unlawful. Use and these terms are subject to the law and jurisdiction that apply in the circumstances.
Changes
Effective 27 August 2026. The site, records and terms may be corrected or changed. Material legal wording remains subject to Maple Web Group review before production launch.