curl -X DELETE "https://example.com/v1/members/string/phone"Empty
Delete Email Domain
Permanently remove a sender domain/identity. Irreversible — for a custom domain, also deletes the SES identity, so the domain can no longer send until re-registered and re-verified. Fails with 409 if any Email rows still reference this domain; delete or wait for those to age out first.
Delete Provider
Delete one provider row. Deleting the active row promotes the most-recently-updated sibling. Idempotent: deleting a row that isn't there is a 204 too. 404 on an unknown layer.