How to create it??

I want to create an email client for IPhone that will receive emails as is done in Mail.app. Is there any api in IPhone SDK that will assist in doing this?
If not then is there any other alternative of creating such email client for IPhone?
I want this feature to be included in an IPhone project that requires processing the incoming emails.
Any idea??

 

Is there a way for getting notification whenever IPhone gets Emails. Any apple event because even if one creates an app with a thread/Task then it will have to regularly ping the port or something of that sort?