I have been asked to run a report on Webex calling tenant for all User ( over 500) that shows which users have configured custom voicemail greetings for their voicemail .
I know that this can be achieved at through Developer API
Read Voicemail Settings for a Person
Retrieve a person's Voicemail settings.
This is only for one person at a time . Is there any Developer API that can be run for the same settings but across the whole user base