HTTP + SOAP11
         The following are sample HTTP requests and responses. 
            The placeholders shown need to be replaced with actual values.
POST /soap11 HTTP/1.1 
Host: content.pbsdealers.com 
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: MessageUpdate
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Body>
<MessageUpdate xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/PBS.AristoServices.ServiceModel">
  <AuthorizationKey>String</AuthorizationKey>
  <Folder>Inbox</Folder>
  <MailServer>String</MailServer>
  <MessageId>00000000-0000-0000-0000-000000000000</MessageId>
  <Password>String</Password>
  <SerialNumber>String</SerialNumber>
  <UserName>String</UserName>
  <Viewed>false</Viewed>
</MessageUpdate>
    </soap:Body>
</soap:Envelope>
 
HTTP/1.1 200 OK
Content-Type: application/xml
Content-Length: length
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Body>
<Confirmation xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/PBS.AristoServices.ServiceModel">
  <Message>String</Message>
  <Reference>String</Reference>
  <WasSuccess>false</WasSuccess>
</Confirmation>
    </soap:Body>
</soap:Envelope>