Message System The SOLIDWORKS PDM message system sends vault notifications (such as workflow notifications) to users. Contents Types of Message System Configuring the Message System In SOLIDWORKS PDM Professional, you can configure SOLIDWORKS PDM to send notifications using the default database message system or an SMTP mail server. The SOLIDWORKS PDM Standard supports only the default database message system. Example: Using the Database Message System This example describes how to use the built-in SOLIDWORKS PDM database message system.