jmapio/jmap resource

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1366 stars · 98 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

The official IETF specification repository for JMAP (JSON Meta Application Protocol), a modern open standard for email clients to access mail stores over HTTP+JSON, replacing IMAP and SMTP submission. It also hosts documentation and resources for the protocol, with ongoing work extending it to contacts and calendars to replace CardDAV/CalDAV.

Use cases

• replace IMAP with a modern JSON email protocol
• build an email client that syncs efficiently over HTTP
• implement real-time email push notifications
• understand the JMAP specification before implementing a server
• find JMAP libraries and server implementations
• migrate from CardDAV/CalDAV to JMAP for contacts and calendars

When to choose

• you are building an email client, webmail, or server and want a modern HTTP/JSON protocol instead of IMAP
• you need efficient sync and sub-second push for mailboxes
• you want an open, patent-free IETF standard with OAuth 2.0 support

When to avoid

• you need MTA-to-MTA SMTP transmission, which JMAP does not replace
• your infrastructure depends on existing IMAP tooling and cannot adopt a new protocol
• you need a ready-to-run implementation rather than a specification document

Facets

learning-resource · maturity active

email api-framework http-server documentation json email apis documentation messaging-platforms web-development cross-platform jmap ietf-standard email-protocol imap-replacement specification push-notifications oauth2 web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="jmapio/jmap")