POST /api/conversation-messages
Send an outbound message to a conversation.
Requires OAuth authentication and account-level enablement. To request access, reach out in the developer community.
Rate limits:
Burst: 3/s
Steady: 60/m
Scopes:
conversations:write
OpenAPI Spec
Servers
- https://a.klaviyo.com
Request headers
| Name | Type | Required | Description |
|---|---|---|---|
revision |
String | Yes |
API endpoint revision (format: YYYY-MM-DD[.suffix]) Default value: "2026-04-15" |
How to start integrating
- Add HTTP Task to your workflow definition.
- Search for the API you want to integrate with and click on the name.
- This loads the API reference documentation and prepares the Http request settings.
- Click Test request to test run your request to the API and see the API's response.