Sorry, that isn’t possible for the following reasons:
As a corporate policy, we do not access any of your phone features including the Contact Book. We ask for permission only when a feature absolutely requires us to.
You can add a maximum of 10 contacts under ‘Trusted Contacts’ as this feature is for your absolutely close ones. PRO plan users can add any number of contacts.
If the number of people you want to hear from exceeds 10, you can always use the “Pause Call Filter” option to receive calls from all your contacts.