Errors
domain_has_inboxes
HTTP status: 409
What happened
The domain still has active inboxes, so it cannot be deleted. Inboxes in both live and test mode count.
How to fix
List the inboxes with GET /v1/inboxes?domain_id=<domain_id> in each mode and delete them with
DELETE /v1/inboxes/{inbox_id}. Then retry deleting the domain.
Source: docs/errors/domain_has_inboxes.md. All error codes