ADDRESS *rfc822_append (ADDRESS ** a, ADDRESS * b);
void rfc822_write_address (char *, size_t, ADDRESS *, int);
void rfc822_write_address_single (char *, size_t, ADDRESS *, int);
-void rfc822_free_address (ADDRESS ** addr);
void rfc822_cat (char *, size_t, const char *, const char *);
extern int RFC822Error;