RFC 8621 · PROPOSED STANDARD · 2019

The JSON Meta Application Protocol for Mail

Overview

RFC 8621, “The JSON Meta Application Protocol for Mail”, is a Proposed Standard document published in August 2019 by N. Jenkins, C. Newman. It updates RFC 5788. The canonical text is published by the RFC Editor.

Abstract

This document specifies a data model for synchronising email data with a server using the JSON Meta Application Protocol (JMAP). Clients can use this to efficiently search, access, organise, and send messages, and to get push notifications for fast resynchronisation when new messages are delivered or a change is made in another client.

Abstract as published in the RFC, via rfc-editor.org.

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 8621 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC updates
RFC 5788
Other RFCs from 2019

Who Is Online

In total there are 207 users online: 0 registered, 201 guests and 6 bots.

Most users ever online was 1,226 on 13 Jun 2026, 3:56 am.

Bots: AhrefsBot Applebot Bingbot Other Bot SemrushBot Sogou

Users active in the past 15 minutes. Total registered members: 354