1 files changed, 30 insertions, 1 deletions
diff --git a/gnu/services/mail.scm b/gnu/services/mail.scm
index 81f692e437..72dc123f41 100644
--- a/gnu/services/mail.scm
+++ b/gnu/services/mail.scm
@@ -355,7 +355,28 @@ This is used by imap (for shared users) and lda.")
   (mail-max-userip-connections
    (non-negative-integer 10)
    "Maximum number of IMAP connections allowed for a user from each IP
-address.  NOTE: The username is compared case-sensitively."))
+address.  NOTE: The username is compared case-sensitively.")
+  (imap-metadata?
+   (boolean #f)
+   "Whether to enable the @code{IMAP METADATA} extension as defined in
+@uref{https://tools.ietf.org/html/rfc5464, RFC@tie{}5464}, which provides
+a means for clients to set and retrieve per-mailbox, per-user metadata
+and annotations over IMAP.
+
+If this is @samp{#t}, you must also specify a dictionary @i{via} the
+@code{mail-attribute-dict} setting.")
+  (managesieve-notify-capability
+   (space-separated-string-list '())
+   "Which NOTIFY capabilities to report to clients that first connect to
+the ManageSieve service, before authentication.  These may differ from the
+capabilities offered to authenticated users.  If this field is left empty,
+report what the Sieve interpreter supports by default.")
+  (managesieve-sieve-capability
+   (space-separated-string-list '())
+   "Which SIEVE capabilities to report to clients that first connect to
+the ManageSieve service, before authentication.  These may differ from the
+capabilities offered to authenticated users.  If this field is left empty,
+report what the Sieve interpreter supports by default."))
 
 (define (serialize-protocol-configuration field-name val)
   (format #t "protocol ~a {\n" (protocol-configuration-name val))
@@ -1133,6 +1154,14 @@ disabled.")
 @samp{mdbox-rotate-size}.  This setting currently works only in Linux
 with some file systems (ext4, xfs).")
 
+  (mail-attribute-dict
+   (string "")
+   "The location of a dictionary used to store @code{IMAP METADATA}
+as defined by @uref{https://tools.ietf.org/html/rfc5464, RFC@tie{}5464}.
+
+The IMAP METADATA commands are available only if the ``imap''
+protocol configuration's @code{imap-metadata?} field is @samp{#t}.")
+
   (mail-attachment-dir
    (string "")
    "sdbox and mdbox support saving mail attachments to external files,