if ($special_encoding) {
$mime_header->encoding = $special_encoding;
} else {
- $mime_header->encoding = 'us-ascii';
+ $mime_header->encoding = '7bit';
}
if ($default_charset) {
$mime_header->parameters['charset'] = $default_charset;
$mime_header = new MessageHeader;
$mime_header->type0 = 'message';
$mime_header->type1 = 'disposition-notification';
- $mime_header->encoding = 'us-ascii';
+ $mime_header->encoding = '7bit';
$part2->mime_header = $mime_header;
$composeMessage = new Message();