Email validation regex

Email validation

+ (BOOL)validateForEmail:(NSString *)email {
	
	NSString *regExPattern = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
	NSRegularExpression *regEx = [[NSRegularExpression alloc] initWithPattern:regExPattern options:NSRegularExpressionCaseInsensitive error:nil];
	NSUInteger regExMatches = [regEx numberOfMatchesInString:email options:0 range:NSMakeRange(0, email.length)];
	
	if (regExMatches == 0) {
		return NO;
	} else {
		return YES;
	}
}