Question

i need to know is there any way to check that the user has given an id in mail application so that i can notify the user before calling MFMailComposeViewController that you are not signed in or you have not given an email id in mail application.

Answer 1

canSendMail

Returns a Boolean indicating whether
the current device is able to send
email.

+ (BOOL)canSendMail

Return Value

YES if the device is configured for
sending email or NO if it is not.
Discussion

You should call this method before
attempting to display the mail
composition interface. If it returns
NO, you must not display the mail
composition interface.

if([MFMailComposeViewController canSendMail])
{
//do something
}
else
{
// cannot send mail
}