When using FireFox as the default browser, when clicking a link from an email notification that opens Work Center, it takes about 4-6 seconds to open. When clicking a link to classic, it only takes about 2.
If the URL that is embedded in the message has expired, the user must login to SBM and at that time a license would be used. You configure the expiration time for the token in the Notification System Settings tab in the Notifications view of the Mail Servers tab in SBM Configurator. For details, refer to the SBM Installation and Configuration Guide.