Or use the static index:
http://debbugs.gnu.org/db/ix/full.html
+** What are those "mbox folder" links on the bug report pages?
+
+"mbox folder" = messages as they arrived at the tracker
+
+"status mbox" = as above, but with a fake message at the start
+ summarizing the bug status
+
+"maintainer mbox" = messages as sent out from the tracker to the
+ maintainers (ie, bug-gnu-emacs). These have some changed headers
+ (Resent-*, Subject, etc).
+
** ChangeLog issues
*** When you fix a bug, it can be helpful to put the bug number in the