IMAP PREVIEW

Dovecot supports the ability to access per-message preview text, retrieved via the IMAP FETCH command.

Dovecot supports three different versions of PREVIEW retrieval, based on the server version:

RFC 8970

Support for the RFC standard: IMAP PREVIEW extension (RFC 8970).

New in version v2.3.15.

PREVIEW w/algorithm (deprecated)

This is support for a working draft of RFC 8970, where the preview algorithm could be explicitly requested by the client.

See: https://datatracker.ietf.org/doc/draft-ietf-extra-imap-fetch-preview/06/

This method of accessing the preview is deprecated, and should be replaced by the standard RFC 8970 usage.

New in version v2.3.7.

Deprecated since version v2.3.15.

SNIPPET (deprecated)

This is support for a working draft of RFC 8970, when the extension was called SNIPPET.

See: https://www.ietf.org/archive/id/draft-slusarz-imap-fetch-snippet-00.txt

This method of accessing the preview is deprecated, and should be replaced by the standard RFC 8970 usage.

New in version v2.2.34.

Deprecated since version v2.3.15.