C#

Microsoft.Office.Interop.Outlook.Selection SelectedEmails = this.Application.ActiveExplorer().Selection;
            Microsoft.Office.Interop.Outlook.MailItem EMail = null;
            if (SelectedEmails.Count == 0)
            {
                MessageBox.Show("Please select e-mail for submission", "3Hats Add-In", MessageBoxButtons.OK);
                return;
            }
            else if (SelectedEmails.Count > 1)
            {
                MessageBox.Show("Please select only one e-mail for submission", "3Hats Add-In", MessageBoxButtons.OK);
                return;
            }

            try
            {
                // Apparently Office is VB oriented, so all indicies start from 1, not 0
                EMail = (Microsoft.Office.Interop.Outlook.MailItem)SelectedEmails[1];
                // Save attachments into temporary folder (Docs & Settings\Temp)
                foreach (Microsoft.Office.Interop.Outlook.Attachment Attachment in EMail.Attachments)
                {
                    Attachment.SaveAsFile(System.IO.Path.GetTempPath() + "\\" + Attachment.FileName);

                }