public function testMessageString()
 {
     $string = $this->_message->setCharset('utf-8')->setTags('tag1')->setTo('*****@*****.**')->setFrom('*****@*****.**')->setReplyTo(['*****@*****.**', '*****@*****.**' => 'user'])->setCc('*****@*****.**')->setBcc('*****@*****.**')->setSubject('My Message')->toString();
     $this->assertEquals('My Message - Recipients: [TO] to@email.it [CC] cc@email.it [BCC] bcc@email.it', $string);
 }