I know that this would be fairly easy id if I had a dedicated server.

Issues:
My hosting does not allow me to utilize the IMAP PHP extension.

I would like to find a small solution but the only thing im currently aware of as a solution is the Zend Framework.

What options do I have with the limitation of Imap extensions being disallowed.

Note: I'm looking to constantly check for new mail so I dont think POP3 would work well here.