I am developing an iPhone application in which I should send mail only to the recipient without displaying the UI MFMailComposer view (without user interaction). Can you tell me how to achieve this?
You cannot send email without user acceptance. But there are many web services on the Internet that can send emails. I assume that some application uses these services or uses its own.
See also How to send mail from an iPhone application.
You can also use gmail mail services in xcode
Using the OpenURL method for UIApplication, you can send mail without using the mail composer. To do this, you must select the "mailto" option.