title: Outlook MailItem: How to distinguish whether mail is incoming or outgoing?
body: <p>I am writing VSTO Outlook addin in C#, and I need to distinguish, whether given MailItem is incoming or outgoing (or neither, when it is  for example a draft).</p>
  
  <p>Is there some foolproof way to do this? Best solution I have now would be getting a list of recipients, cc's, and bcc's, loading email adresses from active accounts, and checking if those two lists intersect, but this seems quite fragile to me, and I hope that there is a better solution.</p>
  
  <p>Use case: I'd like to get a relevant date for an email, which could be either ReceivedTime, or SentOn, but to know which one I should use, I beed to know whether a mail was sent or received.</p>
  
  <p>Thank you for ideas :)</p>