How do I access TOL Patient Portal Secure Messaging? 1.Go to www.TRICAREOnline.com. 2.Log in with your DoD CAC, Premium DS Logon, or DFAS myPay credentials. If you do not have DS Logon credentials and would like to, click "Need An Account." 3.Click on the " Secure Messaging ". 4.Y ou are connected with Secure Messaging and can begin.