title: Verify the receiver has read mail and verify the receiver email ip
body: <p>I'm working on the C# project whom allows the sender to send mail and:</p>
  
  <ul>
  <li>Verify the receiver has read email or not?</li>
  <li>Verify the receiver's email is located in Inbox or Spam...</li>
  <li>Verify the receiver's email ip</li>
  <li>Verify the receiver clicked the link on sender's email</li>
  </ul>
  
  <p>I do not know how to start to deal with these problems :(</p>
  
  <p>Thanks and appreciate you helps!!!</p>