title: which is the better way to create an object of Outlook MaiItem
body: <p>I found two ways to create an object of Outlook mailItem</p>
  
  <pre><code>Outlook.MailItem oMsg = (Outlook.MailItem)Globals.ThisAddIn.Application.CreateItem(Outlook.OlItemType.olMailItem);
  </code></pre>
  
  <p>and </p>
  
  <pre><code> Outlook.Application oApp = new Outlook.Application();
  Outlook.MailItem oMsg = (Outlook.MailItem)oApp.CreateItem(Outlook.OlItemType.olMailItem);
  </code></pre>
  
  <p>What is the diffrence between these two codes and Which one is better and secure?</p>