+notmuch_status_t
+_notmuch_message_file_get_headers (notmuch_message_file_t *message_file,
+ const char **from_out,
+ const char **subject_out,
+ const char **to_out,
+ const char **date_out,
+ char **message_id_out);
+
+const char *
+_notmuch_message_file_get_filename (notmuch_message_file_t *message);
+