Usually this is only ever to be used during migration, or restoring mailbox after disaster.
Settings these values is highly discouraged, and is not supported for all mail backends.
.\"------------------------------------------------------------------------
+.SS mailbox cache decision
+.B doveadm mailbox cache decision
+[\fB\-A\fP|\fB\-u\fP \fIuser\fP|\fB\-F\fP \fIfile\fP]
+[\fB\-S\fP \fIsocket_path\fP]
+[\fB\--all\fP]
+[\fB\--fields\fP \fIlist of fields\fP]
+[\fB\--last-used\fP \fIunix timestamp\fP]
+[\fB\--decision\fP \fIno|temp|yes\fP]
+.IR mailbox\ ...
+.PP
+This command is used to list or change caching decisions for field(s) in mailbox(es).
+You can list decisions by leaving out decision and last-used parameters.
+.PP
+.\"-------------------------------------
+.TP
+.B \--all
+List or change all fields.
+.\"-------------------------------------
+.TP
+.B \--fields
+List or change these comma/space separated fields.
+.\"-------------------------------------
+.TP
+.B \--decision
+Set field caching decision. Yes means it's always cached.
+Temp means it's provisionally cached.
+No means the field is not cached.
+.\"-------------------------------------
+.TP
+.B \--last-used
+Set field's last used timestamp.
+.\"-------------------------------------
+.RE
+.PP
+NOTE. This command cannot be used to add new fields to cache! \
+You need to first add them to configuration. \
+Setting caching to no will not immediately drop field from cache, \
+it will stop adding the field to cache.
+.\"------------------------------------------------------------------------
+.SS mailbox cache remove
+.B doveadm mailbox cache remove
+[\fB\-A\fP|\fB\-u\fP \fIuser\fP|\fB\-F\fP \fIfile\fP]
+[\fB\-S\fP \fIsocket_path\fP]
+.IR search query
+.PP
+Remove any matching mail(s) from cache.
+.PP
+WARNING! This command can erase ALL cached data, causing system slowness.
+.\"------------------------------------------------------------------------
.SH EXAMPLE
List subscribed mailboxes, beginning with \(aqdovecot\(aq, of user bob.
.sp
.\"------------------------------------------------------------------------
.SH SEE ALSO
.BR doveadm (1)
+.BR doveadm-search-query (5)
.BR doveadm-mailbox-cryptokey(1)