-int mh_read_dir (CONTEXT *, const char *);
-int mh_sync_mailbox (CONTEXT *, int *);
-int mh_check_mailbox (CONTEXT *, int *);
-int mh_buffy (const char *);
-int mh_check_empty (const char *);
-
-int maildir_read_dir (CONTEXT *);
-int maildir_check_mailbox (CONTEXT *, int *);
-int maildir_check_empty (const char *);