Channel address
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Operations
receive
receive_contactMailingListSubscribed
Contact subscribed to mailing list
Messages
contactMailingListSubscribed
Sent when a contact is subscribed to a mailing list. Contains `contactIdentity` and `mailingList` objects. When double opt-in is enabled, this event only fires after the contact confirms their subscri
Content-Type:
application/jsonAbout AsyncAPI
The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.
Browse every event-driven channel on the APIs.io network or compare with the broader Agent Skill and MCP server surfaces of the same providers.