title: How to send a mail using Microsoft.Office.Interop.Outlook.MailItem by specifying the From Address
body: <p>I'm using Interop for sending e-mails via Outlook, but I am not able to specify the From e-mail address.</p>
  
  <p>I want to send mails to multiple users originating from the same sender (from). I need to mention the from e-mail address. However I cannot find a property using Intellisense that allows me to specify it.</p>
  
  <p>Please help.</p>
  
  <pre><code>Microsoft.Office.Interop.Outlook.Application olkApp1 = 
      new Microsoft.Office.Interop.Outlook.Application();
  Microsoft.Office.Interop.Outlook.MailItem olkMail1 =
      (MailItem)olkApp1.CreateItem(OlItemType.olMailItem);
          olkMail1.To = txtpsnum.Text;
          olkMail1.CC = "";
          olkMail1.Subject = "Assignment note";
          olkMail1.Body = "Assignment note";
          olkMail1.Attachments.Add(AssignNoteFilePath, 
              Microsoft.Office.Interop.Outlook.OlAttachmentType.olByValue, 1, 
                  "Assignment_note");
  olkMail1.Save();
  //olkMail.Send();
  </code></pre>