--- author: canory date: 2025-08-22T20:12:31Z tags: [feeds] feed: description: "Recently published RFCs" domain: "www.rfc-editor.org" enclosure: "" favicon: "/data/media/favicon.httpswwwrfc-editororgrfcrssxml.png" home: "" link: "https://www.rfc-editor.org/info/rfc9788" name: "Recent RFCs" source: "https://www.rfc-editor.org/rfcrss.xml" --- S/MIME version 3.1 introduced a mechanism to provide end-to-end cryptographic protection of email message headers. However, few