Hi, Manuel! I have a problem with analyze. When the email message was decoded I see it:
["DecodedHeaders"]=>
  array(3) {
    ["from:"]=>
    array(1) {
      [0]=>
      array(1) {
        [0]=>
        array(2) {
          ["Value"]=>
          string(47) "чЙФБМЙК сУОПУПМОЩЫЛПЧ "
          ["Encoding"]=>
          string(6) "KOI8-R"
        }
      }
    }
But, after analyze this headers of message was displayed other result:
  ["From"]=>
  array(1) {
    [0]=>
    array(2) {
      ["address"]=>
      string(23) "
[email protected]"
      ["name"]=>
      string(74) "=?koi8-r?Q?=F7=C9=D4=C1=CC=C9=CA_=F1=D3=CE=CF=D3=CF=CC=CE=D9=DB=CB=CF=D7?="
    }
  }