Outlook Add In using C#

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C#

ASP.NET

I have to create a Add In in which i have to read mails inside a particular folder of Outlook (like Inbox->TestFolder)and then transfer that mail to webserver. i have created a rule to move mails to TestFolder.
I am able to fire NewMailEx event but i am not able to read mails inside test folder since NewMailEx fires before rules process
Please help me on this if possible with some code

or can i use window service for the same ,what will be the better option Window service or outlook Addin

private void ThisAddIn_Startup(object sender, System.EventArgs e)
        {
            _Explorers = this.Application.Explorers;

            _Explorers.Application.NewMailEx += new Outlook.ApplicationEvents_11_NewMailExEventHandler(Application_NewMailEx);


        }

private void Application_NewMailEx(string EntryID)
        {
           
            Microsoft.Office.Interop.Outlook.MAPIFolder inboxFolder = null;
            Microsoft.Office.Interop.Outlook.MAPIFolder subFolder = null;
           
            outlookNamespace = this.Application.GetNamespace("MAPI");
            outlookNamespace.Logon(null, null, false, false);

            inboxFolder = outlookNamespace.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderInbox);
            subFolder = inboxFolder.Folders["HR"];


            foreach (Microsoft.Office.Interop.Outlook.MailItem mail in subFolder.Items)
            {
                if (mail.UnRead == true)
                {
                    foreach (Microsoft.Office.Interop.Outlook.Attachment attachment in mail.Attachments)
                    {
                        filename = folderpath + attachment.FileName;
                        attachment.SaveAsFile(filename);
                    }
                }
            }

            
        }