Your bug report

#59007: rmail-forward generates wrong-type-argument error

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 59007@debbugs.gnu.org.

-- 
59007: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=59007
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems