3 NGMimeRFC822DateHeaderFieldGenerator:
4 - do not use -descriptionWithCalendarFormat:
6 - apparently a lot of code duplications for quoted printable decoding/encoding?
7 look for "?iso-8859" in:
8 - NGMimeAddressHeaderFieldGenerator.m
9 - NGMimeContentDispositionHeaderFieldGenerator.m
10 - NGMimeContentTypeHeaderFieldGenerator.m