curl -X DELETE "https://example.com/v1/contacts/string"Empty
Create Subscription
Create a webhook subscription for one or more event types. The response includes the plaintext signing secret — this is the only time it is ever returned; store it now. Every later GET omits it. Use POST /v1/webhooks/{sub_id}/rotate-secret to get a new plaintext secret if it is lost or compromised.
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.