1 files changed, 1 insertions, 0 deletions
diff --git a/lib/imap.h b/lib/imap.h
index c7f76f5a0..768fc4b8c 100644
--- a/lib/imap.h
+++ b/lib/imap.h
@@ -92,6 +92,7 @@ struct imap_conn {
   bool tls_supported;         /* StartTLS capability supported by server */
   bool login_disabled;        /* LOGIN command disabled by server */
   bool ir_supported;          /* Initial response supported by server */
+  bool mutual_auth;           /* Mutual authentication enabled (GSSAPI only) */
   char *mailbox;              /* The last selected mailbox */
   char *mailbox_uidvalidity;  /* UIDVALIDITY parsed from select response */
 };