protected function _getHeaders($boundary) { if (null !==
$boundary) { // Build multipart mail
$type =
$this->_mail->
getType();
if (!
$type) { if ($this->_mail->hasAttachments
) { $type = Zend_Mime::MULTIPART_MIXED;
} elseif ($this->_mail->
getBodyText() &&
$this->_mail->
getBodyHtml()) { $type = Zend_Mime::MULTIPART_ALTERNATIVE;
} else { $type = Zend_Mime::MULTIPART_MIXED;
} } $this->_headers
['Content-Type'
] = array
( $type . ';'
.
$this->EOL
. " " . 'boundary="' .
$boundary . '"'
);