RFC 9219 · PROPOSED STANDARD · 2022
SUN · 14 JUN 2026
S/MIME Signature Verification Extension to the JSON Meta Application Protocol
Overview
RFC 9219, “S/MIME Signature Verification Extension to the JSON Meta Application Protocol”, is a Proposed Standard document published in April 2022 by A. Melnikov. The canonical text is published by the RFC Editor.
Abstract
This document specifies an extension to "The JSON Meta Application Protocol (JMAP) for Mail" (RFC 8621) for returning the S/MIME signature verification status.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 9219 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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- RFC 9220 Bootstrapping WebSockets with HTTP/3
- RFC 9217 Current Open Questions in Path-Aware Networking
- RFC 9221 An Unreliable Datagram Extension to QUIC
- RFC 9216 S/MIME Example Keys and Certificates
- RFC 9222 Guidelines for Autonomic Service Agents
- RFC 9223 Real-Time Transport Object Delivery over Unidirectional Transport
- RFC 9215 Using GOST R 34.10-2012 and GOST R 34.11-2012 Algorithms with the Internet X.509 Public Key Infrastructure