| Field | Type | Required | Description | Example |
|---|---|---|---|---|
Content |
string | ➖ | Content body of the message | Hello, world! |
Recipient |
string | ➖ | Can be a conversation ID, user ID, email or phone number. | c28xyrc55866bvuv |
Sender |
string | ➖ | The account_id or phone number of the message sender | +34820398402 |