Encodings

Is this problem already explained in some document?
Would you be so kind to tell me where?
Or is Mail::Box so broken that this is not possible and someone should
fix it?


I want to build a message correctly encoded.
    my $msg = Mail::Message->build
      ( From       => $from
      , To         => $to
      , Subject    => $subject
      ...

If any of the above headers have characters outside us-ascii, how should
them be encoded?

Example:
If I have:
   Presentación
That should be encoded as:
   Subject: =?iso-8859-1?Q?Presentaci=F3n?=

How do I get that?


I'd also like an example on how to create a full message if I have the
body text encoded in iso-8859-1
I also have the date in converted with mktime() how do I encode it
easily with Mail::Message ?