I downloaded a dll from below website to overcome Outlook's security access issue.
(under Advanced Security for Outlook)
I did not have to add the DLL to the ASP.NET project. I re-started my pc after the download.
The first time the application accessed outlook, I received a popup asking me to set security permission for the application accessing outlook. Once I set this up wth the correct option, Outlook's popup message never appeared.
No side issues so far.