title: Email id starting with number is not accepted
body: <p>I am using following code for email validation . If email id start with number then it is not accepting , I want to accept that like <strong>123a@asd.com</strong> . please suggest me .</p>
  
  <pre><code>BOOL stricterFilter = NO; 
  NSString *stricterFilterString = @"^[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}$";
  NSString *laxString = @"^.+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2}[A-Za-z]*$";
  NSString *emailRegex = stricterFilter ? stricterFilterString : laxString;
  NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
  return [emailTest evaluateWithObject:emailID];
  </code></pre>
  
  <p>Thanks in advance</p>