Content-Type: multipart/digest; boundary="boundaryString" This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --boundaryString Content-Type: message/rfc822 Content-Disposition: inline headers-1 body-1 --boundaryString Content-Type: message/rfc822 Content-Disposition: inline headers-2 body-2 --boundaryString Content-Type: message/rfc822 Content-Disposition: inline headers-3 body-3 --boundaryString Content-Type: message/rfc822 Content-Disposition: inline headers-4 body-4 --boundaryString--