Download only new messages from Hotmail using HTTPMail

[Guest narotic]

I recently bought a C500 and started developing some stuff. The handiest thing I could think of was a Smartphone Hotmail client, since I already read about the HTTPMail/WebDAV protocol.

Currently I started building the Hotmail API, which goes very well. Except for one tiny detail which prevents me from going on:

I use the Propfind method to receive messages from a folder. This method returns ALL properties from all messages in that folder. For instance, my inbox contains 500+ messages, in that case the headers will be 200+ KB. You can imagine this kind of application would be useless with a GPRS connection.

My question is if there are any way to receive only the new messages (or after a timestamp) from the HTTPMail service. I know Modaco offers POP3 access to Hotmail, so I guess there are some people here with understanding of the HTTPMail/WebDAV service.

PS: I'm aware that I could download a HTTPMail <-> POP3/IMAP connector, but that is not my question. My main concern is whether I can build the application I want, not only to have Hotmail on my Smartphone