Unsubscribe contact from topic

Unsubscribe a contact from a topic. Idempotent — returns 204 whether the subscription existed or not. Requires the audience:write scope and is blocked for sandbox API keys.

DELETE /audience/contacts/{contactId}/topics/{topicId}

Unsubscribe contact from topic

cURL

curl --request DELETE \
  --url https://app.lettr.com/api/audience/contacts/{contactId}/topics/{topicId} \
  --header 'Authorization: Bearer <token>'

204

Unsubscribe a contact from a topic. Idempotent — returns 204 whether the subscription existed or not. Requires the audience:write scope and is blocked for sandbox API keys.

Authorizations

Authorization · string · header · required

API key for authentication

Path Parameters

contactId · string<uuid> · required

Contact ID

topicId · string<uuid> · required

Topic ID

Response

204

Unsubscribed (or no subscription existed)