CiderWebmail::Header(3pm)

  transform({ type => $header_name, data => $header_data })
'transform' a header from the 'raw' state (the way it was returned from the server) to an appropriate object. if no appropriate object exists the header will be decoded (using decode_mime_words()) and UTF-8 encoded

the following 'transformations' take place:

•   from -> Email::Address::XS object

•   to -> Email::Address::XS object

•   cc -> Email::Address::XS object

•   date -> CiderWebmail::Date object