Send message with delivery acknow...

Send a LinkedIn message while acknowledging receipt of previous messages. Useful for replying to conversations where you want to mark received messages as acknowledged. Rate limit: 150 messages per day per account.

Deprecated: Use POST /conversations/send instead.

POST/messaging/send-with-ack

Authentication requiredMessaging

Code Examples

curl -X POST 'https://api.connectsafely.ai/linkedin/messaging/send-with-ack' \
  -H 'Authorization: Bearer <your_api_key>' \
  -H 'Content-Type: application/json' \
  -d '{"accountId":"acc_12345","recipientProfileId":"john-doe-123","message":"Hello! I would like to connect with you.","subject":"Quick question about your work","messageType":"normal","messageUrns":[]}'

Parameters

No parameters.

Request Body

Field	Type	Required	Description
`accountId`	string	No	LinkedIn account ID to use. If not provided, uses the default account.
`recipientProfileId`	string	Conditional	Recipient LinkedIn profile vanity URL slug (e.g., "john-doe-123"). Prefer recipientProfileUrn when available. Either `recipientProfileId` or `recipientProfileUrn` must be provided.
`recipientProfileUrn`	string	Conditional	Recipient LinkedIn profile URN (e.g., "urn:li:fsd_profile:ACoAABJefVoBrz2LR3f..."). Preferred over recipientProfileId. Either `recipientProfileUrn` or `recipientProfileId` must be provided.
`message`	string	Yes	Message content to send
`subject`	string	No	Subject line (for InMail)
`messageType`	string	No	Message type
`messageUrns`	array	No	Message URNs to acknowledge delivery of

Example

{
  "recipientProfileUrn": "urn:li:fsd_profile:ACoAAFpqSoMB8vTqRbg4mN_wbabO8w0gjgFu-6o",
  "message": "Thanks for your message!"
}

Responses

Status	Description
200	Message sent with acknowledgment successfully
400	Bad request - Missing required parameter
401	Unauthorized - Invalid or missing API key
429	Rate limit exceeded
500	Server error

Rate Limit Headers

All responses include rate limit information in the headers:

Header	Description
`X-RateLimit-Action`	The action type being rate limited
`X-RateLimit-Limit`	Maximum actions allowed per period
`X-RateLimit-Used`	Actions used in current period
`X-RateLimit-Remaining`	Actions remaining
`X-RateLimit-Reset`	ISO 8601 timestamp when limit resets

200 Response Parameters

Name	Type	Description
`success`	boolean
`message`	string
`recipientProfileUrn`	string
`acknowledgmentSent`	boolean

200 Example

{
  "success": true,
  "message": "Message sent successfully",
  "recipientProfileUrn": "urn:li:fsd_profile:ACoAAFpqSoMB8vTqRbg4mN_wbabO8w0gjgFu-6o",
  "acknowledgmentSent": false
}

400 Response Parameters

Name	Type	Description
`success`	boolean
`error`	object

400 Example

{
  "success": false,
  "error": "message is required"
}

401 Example

{
  "error": "Unauthorized - Invalid credentials"
}

429 Response Parameters

Name	Type	Description
`error`	string
`success`	boolean

429 Example

{
  "error": "Rate limit exceeded for MESSAGE: 150/150 used",
  "success": false
}

500 Example

{
  "error": "Failed to get LinkedIn authentication credentials",
  "success": false
}

Send message with delivery acknowledgment