That should be no problem for you to do. Getting a client contact list including emails can be done / downloaded through the client report.
First click on the gear menu in the upper right corner of VetBadger and select Practice Management:
This will bring you to the reports tab for the Practice Management Dashboard. Now you want to select the Clients report from the report selector:
Once that is selected you will see all of the filter options for the report, to get a list of all current clients just add a start date at or before the opening date for the clinic and then click on "Find Clients"
Once that is done, you will see the list of clients below the filters:
Scroll through to make sure everything looks good and then just click on the button labeled "Export" to download the report as an excel compatible file: