–(BOOL) NSStringIsValidEmail:(NSString *)emailString
{
BOOL stricterFilter = NO; // Discussion http://blog.logichigh.com/2010/09/02/validating-an-e-mail-address/
NSString *stricterFilterString = @”^[A-Z0-9a-z._%+-][email protected]([A-Za-z0-9-]+.)+[A-Za-z]{2,4}$”; NSString *laxString = @”^[email protected]([A-Za-z0-9-]+.)+[A-Za-z]{2}[A-Za-z]*$”;
NSString *emailRegex = stricterFilter ? stricterFilterString : laxString;
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@”SELF MATCHES %@”, emailRegex];
return [emailTest evaluateWithObject:emailString];
}