With recently awarded seed funding, and in collaboration with the Department of Veterans' Affairs (VA) nationwide Medication Reconciliation Initiative, we are developing an informatics-based tool for medication reconciliation following hospital discharge by secure, e-mail-like communication: the Secure Messaging for Medication Reconciliation Tool (SMMRT). In this proposed study, we plan to pilot the SMMRT prototype through My HealtheVet (MHV), the VA's secure personal health record and web portal, among 50 Veterans at VA Boston, with the following two Specific Aims: