Contacts
Do Not Call
Maintain a phone-number-based DNC list that automatically blocks outbound calls.
The DNC list is a separate, phone-number-based registry — not a flag on contact records. Any phone number on the DNC list is automatically blocked from outbound calls (both direct and campaign).
How it works
DNC checks run before every outbound call attempt. If the destination number is on the list, the call is blocked with a contact_on_dnc_list error.
Managing entries
| Action | Description |
|---|---|
| Add | Add a phone number with an optional reason (max 500 characters) |
| Remove | Remove a phone number from the list |
| Check | Check up to 100 numbers in a single request |
| Bulk import | Import up to 10,000 numbers per request |
Source tracking
Each DNC entry records how it was added:
| Source | Description |
|---|---|
| Manual | Added manually via the dashboard |
| API | Added programmatically via the API |
| Call opt-out | Contact requested removal during a call |
| Bulk import | Added via bulk import |