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Serverless Inbox Specs

JMAP extension specifications published by Serverless Inbox.

Each page on this site is the authoritative specification for a JMAP capability URI of the form https://specs.serverlessinbox.com/<name>. The page URL and the capability URI are the same resource.

Page Token

Cursor-based pagination for */query methods on backends that cannot support index-based navigation.

URI: https://specs.serverlessinbox.com/page-token

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WebSocket Push

Persistent WebSocket channel for real-time JMAP state-change notifications, as an alternative to the RFC 8620 EventSource mechanism.

URI: https://specs.serverlessinbox.com/websocket

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