bless( {
    'SubAttrs' => {},
    'Parts' => [],
    'Attrs' => {
         'content-disposition' => 'inline',
         'content-type' => 'text/plain',
         'mime-version' => '1.0',
         'content-length' => undef,
         'content-transfer-encoding' => '8bit'
       },
    'Header' => [
      [
        'date',
        'Sat, 29 Jul 2017 12:31:40 -0700'
      ],
      [
        'to',
        'user1 <user@fqdn.org>'
      ],
      [
        'from',
        'user2 <user2@fqdn.org>'
      ],
      [
        'x-mailer',
        'MIME::Lite 3.030 (F2.84; T1.38; B3.13; Q3.13)'
      ],
      [
        'date',
        'Sat, 29 Jul 2017 12:31:40 -0700'
      ],
      [
        'subject',
        'a message'
      ]
    ]
  }, 'MIME::Lite' );