Two new features that have been asked for many many times. Sorry for the delay folks!
In the Contact Smart Lists area, you can add a "More Search Filter" to easily find the list you're looking in the many lists that you might have created.
Use the Calendar Appointments to filter your Contacts in the Smart List area to perform bulk actions like Emails, SMS & Workflows based on Calendar Appointments.
Example: Send an appointment cancellation email to all of tomorrow's appointments.
These can be turned on Globally or by Location Group.