How do I use C# to access an Outlook inbox (not my default inbox)?

[Paige Watson]

I have read through this post, and found many like it.
My problem is that the email inbox that I am trying to access is not my default inbox.
There is a mail account that receives emails from a reporting site. The email account is "MonthlySales".
I thought that I could just log into the server with a different session:

  profileInfo = (object)string.Format("{0}\n{1}", MailServer, UserName);
 
  ns.Logon(profileInfo, Missing.Value, false, true);
  string name = ns.CurrentUser.Name;
  inboxFolder = ns.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);
 
 

When this code runs:

- Username and MailServer are correct.
- profileInfo is correct

- ns.Logon(...) runs without error...

- "name" still shows MY logged in username
- "inboxFolder" still points to MY local inbox folder.

How do I log into the "MonthlySales" email account so that I can access it programatically?