I have a nicely designed mail sending page that I have to implement. I would like to use MFMailComposeViewController to achieve this task but this comes with its own regular
You may not change MFMailComposeViewController in any way. Quoth the documentation:
Important: The mail composition interface itself is not customizable and must not be modified by your application.
As far as I know, there is no other built-in way to send email from the device.
Your only other option would be to have the device contact a server of your own which would forward the email message, but then of course the message wouldn't be coming from the email address associated with the device and such.