Mail Text Previews deprecated
Starting with v7.10.0, the Open-Xchange Server supports the delivery of text previews for E-Mails, which are shown in list views to the user.
In order to deliver text previews for E-Mails held in an IMAP mail back-end, the package
open-xchange-imap needs to be installed and the IMAP server is supposed to advertise the
Requesting mail text previews via HTTP-API
For requesting text previews, the Open-Xchange Server introduced two columns for the
TEXT_PREVIEW_IF_AVAILABLE) Requests a message's text preview only if immediately available by IMAP server. If not available,
TEXT_PREVIEW) Requests a message's text preview, waiting if necessary for a text preview to be generated by IMAP server
An empty string is advertised for those columns in case referenced E-Mail has no text content.
In case of IMAP, when the
TEXT_PREVIEW_IF_AVAILABLE) column is given, the
"SNIPPET (LAZY=FUZZY)" fetch item is used to query mail text previews (if available). For
"SNIPPET (FUZZY)" fetch item is issued.
App Suite UI
To enable mail text previews in OX AppSuite UI, the
io.ox/mail//features/textPreview feature toggle is supposed to be enabled.
Please see this Internet draft for the formal IMAP specification, which the Open-Xchange Server is using.