private function getLoggingEmails($mail, $parts)
    {
        $emailAddresses = $this->flattenEmailAddresses(
            $this->getAllEmailAddresses($parts)
        );

        $messageIds = [];
        $headers    = $mail->getHeaders();
        if (!empty($headers) && $headers->has('message-id')) {
            $messageId = $headers->get('message-id');
            if ($messageId instanceof ArrayIterator) {
                foreach ($messageId as $header) {
                    /** @var $header HeaderInterface */
                    $messageIds[] = $header->getFieldValue();
                }
            } elseif ($messageId instanceof HeaderInterface) {
                $messageIds = [$messageId->getFieldValue()];
            }
        }

        /*
         * Also strip < and > from message id to only return the email-like id
         */
        $messageIds = array_map(function ($messageId) {
            return trim($messageId, " \t\n\r\0\x0B<>");
        }, $messageIds);

        return array_merge($emailAddresses, $messageIds);
    }
private function getLoggingEmails($mail, $parts)
    {
        $emailAddresses = $this->flattenEmailAddresses(
            $this->getAllEmailAddresses($parts)
        );

        $messageIds = [];
        $headers    = $mail->getHeaders();
        if (!empty($headers) && $headers->has('message-id')) {
            $messageId = $headers->get('message-id');
            if ($messageId instanceof ArrayIterator) {
                foreach ($messageId as $header) {
                    /** @var $header HeaderInterface */
                    $messageIds[] = $header->getFieldValue();
                }
            } elseif ($messageId instanceof HeaderInterface) {
                $messageIds = [$messageId->getFieldValue()];
            }
        }

        /*
         * Also strip < and > from message id to only return the email-like id
         */
        $messageIds = array_map(function ($messageId) {
            return trim($messageId, " \t\n\r\0\x0B<>");
        }, $messageIds);

        return array_merge($emailAddresses, $messageIds);
    }
private function getLoggingEmails ( $ mail , $ parts ) { $ emailAddresses = $ this -> flattenEmailAddresses ( $ this -> getAllEmailAddresses ( $ parts ) ) ; $ messageIds = [ ] ; $ headers = $ mail -> getHeaders ( ) ; if ( ! empty ( $ headers ) && $ headers -> has ( 'message-id' ) ) { $ messageId = $ headers -> get ( 'message-id' ) ; if ( $ messageId instanceof ArrayIterator ) { foreach ( $ messageId as $ header ) { /** @var $header HeaderInterface */ $ messageIds [ ] = $ header -> getFieldValue ( ) ; } } elseif ( $ messageId instanceof HeaderInterface ) { $ messageIds = [ $ messageId -> getFieldValue ( ) ] ; } } /*
         * Also strip < and > from message id to only return the email-like id
         */ $ messageIds = array_map ( function ( $ messageId ) { return trim ( $ messageId , " \t\n\r\0\x0B<>" ) ; } , $ messageIds ) ; return array_merge ( $ emailAddresses , $ messageIds ) ; }
Returns a list of all emails in the parser, including
the message id. This is mostly useful for logging.

@param Part   $mail
@param Part[] $parts

@return array
Returns a list of all emails in the parser including the message id . This is mostly useful for logging .