Start or reuse a donor SMS conversation

curl --request POST \
  --url https://api.gratona.com/v1/admin/sms_inbox/conversations/start \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "donor_id": 1,
  "sms_line_id": 1
}
'

import requests

url = "https://api.gratona.com/v1/admin/sms_inbox/conversations/start"

payload = {
    "donor_id": 1,
    "sms_line_id": 1
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({donor_id: 1, sms_line_id: 1})
};

fetch('https://api.gratona.com/v1/admin/sms_inbox/conversations/start', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.gratona.com/v1/admin/sms_inbox/conversations/start",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'donor_id' => 1,
    'sms_line_id' => 1
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.gratona.com/v1/admin/sms_inbox/conversations/start"

	payload := strings.NewReader("{\n  \"donor_id\": 1,\n  \"sms_line_id\": 1\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.gratona.com/v1/admin/sms_inbox/conversations/start")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"donor_id\": 1,\n  \"sms_line_id\": 1\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.gratona.com/v1/admin/sms_inbox/conversations/start")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"donor_id\": 1,\n  \"sms_line_id\": 1\n}"

response = http.request(request)
puts response.read_body

{
  "conversation": {
    "id": 42,
    "donor_id": 42,
    "donor_name": "Jane Donor",
    "participant_phone_e164": "+15551234567",
    "routing_status": "matched",
    "inbox_status": "open",
    "messaging_status": "active",
    "assigned_user_id": 42,
    "assigned_user_name": "Example",
    "sms_line": {
      "id": 42,
      "phone_number": "+15551234567",
      "provider_line_id": "Example",
      "label": "Example",
      "source": "client_managed_imported",
      "status": "active",
      "is_default": true,
      "line_role": "general",
      "assigned_user_id": 42,
      "visibility": "shared",
      "metadata": {},
      "assigned_user_name": "Example"
    },
    "last_message_at": "2026-10-20T12:00:00Z",
    "last_inbound_at": "2026-10-20T12:00:00Z",
    "last_outbound_at": "2026-10-20T12:00:00Z",
    "last_read_at": "2026-10-20T12:00:00Z",
    "unread_count": 0,
    "needs_reply": true,
    "last_message_preview": "Example",
    "last_message_direction": "inbound",
    "has_attachments": true,
    "messages": [
      {
        "id": 42,
        "direction": "outbound",
        "message_kind": "manual",
        "user_id": 42,
        "sender": {
          "id": 42,
          "name": "Jane Admin",
          "initials": "JA"
        },
        "content": "Thank you for your support.",
        "trigger": "Example",
        "provider_status": "QUEUED",
        "provider_message_handle": "Example",
        "error_code": "Example",
        "error_message": "Example",
        "to_number": "+15551234567",
        "from_number": "+15557654321",
        "received_at": "2026-10-20T12:00:00Z",
        "created_at": "2026-10-20T12:00:00Z",
        "attachments": [
          {
            "id": 42,
            "upload_id": 42,
            "original_filename": "school-update.pdf",
            "mime_type": "application/pdf",
            "file_size_bytes": 10240,
            "ingest_status": "ready",
            "download_url": "<string>",
            "preview_url": "<string>"
          }
        ]
      }
    ]
  },
  "donor": {
    "id": 42,
    "name": "Example",
    "phone_e164": "+15551234567",
    "can_receive_sms": true
  },
  "messages": [
    {
      "id": 42,
      "direction": "outbound",
      "message_kind": "manual",
      "user_id": 42,
      "sender": {
        "id": 42,
        "name": "Jane Admin",
        "initials": "JA"
      },
      "content": "Thank you for your support.",
      "trigger": "Example",
      "provider_status": "QUEUED",
      "provider_message_handle": "Example",
      "error_code": "Example",
      "error_message": "Example",
      "to_number": "+15551234567",
      "from_number": "+15557654321",
      "received_at": "2026-10-20T12:00:00Z",
      "created_at": "2026-10-20T12:00:00Z",
      "attachments": [
        {
          "id": 42,
          "upload_id": 42,
          "original_filename": "school-update.pdf",
          "mime_type": "application/pdf",
          "file_size_bytes": 10240,
          "ingest_status": "ready",
          "download_url": "<string>",
          "preview_url": "<string>"
        }
      ]
    }
  ],
  "pagination": {
    "current_page": 1,
    "last_page": 1,
    "per_page": 50,
    "total": 1
  },
  "reply_eligibility": {
    "can_reply": true,
    "blocked": true,
    "opted_out": true,
    "line_active": true
  },
  "channel": {
    "key": "texts",
    "label": "Texts"
  },
  "message": "Conversation ready.",
  "warning": "Example"
}

{
  "message": "Unauthorized",
  "status": "error"
}

{
  "message": "Not Found",
  "status": "error"
}

{
  "errors": {},
  "status": "error",
  "message": "The given data was invalid."
}