curl --request POST \
  --url https://app.masivo.ai/api/storefront/v1/communication/threads/{id}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-account-id: <x-account-id>' \
  --data '
{
  "parent_message_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "external_message_id": "<string>",
  "sender_user_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "sender_customer_id": "<string>",
  "sender_email": "jsmith@example.com",
  "sender_display_name": "<string>",
  "recipient_actor_ids": [
    {}
  ],
  "subject": "<string>",
  "body_text": "<string>",
  "body_html": "<string>",
  "attachments": [
    {}
  ],
  "raw_payload": {},
  "sent_at": "2023-11-07T05:31:56Z",
  "delivered_at": "2023-11-07T05:31:56Z",
  "read_at": "2023-11-07T05:31:56Z",
  "failed_at": "2023-11-07T05:31:56Z"
}
'

import requests

url = "https://app.masivo.ai/api/storefront/v1/communication/threads/{id}/messages"

payload = {
    "parent_message_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "external_message_id": "<string>",
    "sender_user_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "sender_customer_id": "<string>",
    "sender_email": "jsmith@example.com",
    "sender_display_name": "<string>",
    "recipient_actor_ids": [{}],
    "subject": "<string>",
    "body_text": "<string>",
    "body_html": "<string>",
    "attachments": [{}],
    "raw_payload": {},
    "sent_at": "2023-11-07T05:31:56Z",
    "delivered_at": "2023-11-07T05:31:56Z",
    "read_at": "2023-11-07T05:31:56Z",
    "failed_at": "2023-11-07T05:31:56Z"
}
headers = {
    "x-account-id": "<x-account-id>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-account-id': '<x-account-id>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    parent_message_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    external_message_id: '<string>',
    sender_user_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    sender_customer_id: '<string>',
    sender_email: 'jsmith@example.com',
    sender_display_name: '<string>',
    recipient_actor_ids: [{}],
    subject: '<string>',
    body_text: '<string>',
    body_html: '<string>',
    attachments: [{}],
    raw_payload: {},
    sent_at: '2023-11-07T05:31:56Z',
    delivered_at: '2023-11-07T05:31:56Z',
    read_at: '2023-11-07T05:31:56Z',
    failed_at: '2023-11-07T05:31:56Z'
  })
};

fetch('https://app.masivo.ai/api/storefront/v1/communication/threads/{id}/messages', 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://app.masivo.ai/api/storefront/v1/communication/threads/{id}/messages",
  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([
    'parent_message_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'external_message_id' => '<string>',
    'sender_user_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'sender_customer_id' => '<string>',
    'sender_email' => 'jsmith@example.com',
    'sender_display_name' => '<string>',
    'recipient_actor_ids' => [
        [
                
        ]
    ],
    'subject' => '<string>',
    'body_text' => '<string>',
    'body_html' => '<string>',
    'attachments' => [
        [
                
        ]
    ],
    'raw_payload' => [
        
    ],
    'sent_at' => '2023-11-07T05:31:56Z',
    'delivered_at' => '2023-11-07T05:31:56Z',
    'read_at' => '2023-11-07T05:31:56Z',
    'failed_at' => '2023-11-07T05:31:56Z'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "x-account-id: <x-account-id>"
  ],
]);

$response = curl_exec($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://app.masivo.ai/api/storefront/v1/communication/threads/{id}/messages"

	payload := strings.NewReader("{\n  \"parent_message_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"external_message_id\": \"<string>\",\n  \"sender_user_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"sender_customer_id\": \"<string>\",\n  \"sender_email\": \"jsmith@example.com\",\n  \"sender_display_name\": \"<string>\",\n  \"recipient_actor_ids\": [\n    {}\n  ],\n  \"subject\": \"<string>\",\n  \"body_text\": \"<string>\",\n  \"body_html\": \"<string>\",\n  \"attachments\": [\n    {}\n  ],\n  \"raw_payload\": {},\n  \"sent_at\": \"2023-11-07T05:31:56Z\",\n  \"delivered_at\": \"2023-11-07T05:31:56Z\",\n  \"read_at\": \"2023-11-07T05:31:56Z\",\n  \"failed_at\": \"2023-11-07T05:31:56Z\"\n}")

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

	req.Header.Add("x-account-id", "<x-account-id>")
	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://app.masivo.ai/api/storefront/v1/communication/threads/{id}/messages")
  .header("x-account-id", "<x-account-id>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"parent_message_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"external_message_id\": \"<string>\",\n  \"sender_user_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"sender_customer_id\": \"<string>\",\n  \"sender_email\": \"jsmith@example.com\",\n  \"sender_display_name\": \"<string>\",\n  \"recipient_actor_ids\": [\n    {}\n  ],\n  \"subject\": \"<string>\",\n  \"body_text\": \"<string>\",\n  \"body_html\": \"<string>\",\n  \"attachments\": [\n    {}\n  ],\n  \"raw_payload\": {},\n  \"sent_at\": \"2023-11-07T05:31:56Z\",\n  \"delivered_at\": \"2023-11-07T05:31:56Z\",\n  \"read_at\": \"2023-11-07T05:31:56Z\",\n  \"failed_at\": \"2023-11-07T05:31:56Z\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://app.masivo.ai/api/storefront/v1/communication/threads/{id}/messages")

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

request = Net::HTTP::Post.new(url)
request["x-account-id"] = '<x-account-id>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"parent_message_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"external_message_id\": \"<string>\",\n  \"sender_user_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"sender_customer_id\": \"<string>\",\n  \"sender_email\": \"jsmith@example.com\",\n  \"sender_display_name\": \"<string>\",\n  \"recipient_actor_ids\": [\n    {}\n  ],\n  \"subject\": \"<string>\",\n  \"body_text\": \"<string>\",\n  \"body_html\": \"<string>\",\n  \"attachments\": [\n    {}\n  ],\n  \"raw_payload\": {},\n  \"sent_at\": \"2023-11-07T05:31:56Z\",\n  \"delivered_at\": \"2023-11-07T05:31:56Z\",\n  \"read_at\": \"2023-11-07T05:31:56Z\",\n  \"failed_at\": \"2023-11-07T05:31:56Z\"\n}"

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

{
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "account_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "thread_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "parent_message_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "external_message_id": "<string>",
    "direction": "inbound",
    "message_type": "message",
    "channel": "email",
    "sender_type": "customer",
    "sender_user_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "sender_customer_id": "<string>",
    "sender_email": "jsmith@example.com",
    "sender_display_name": "<string>",
    "recipient_actor_ids": [
      {}
    ],
    "subject": "<string>",
    "body_text": "<string>",
    "body_html": "<string>",
    "attachments": [
      {}
    ],
    "raw_payload": {},
    "sent_at": "2023-11-07T05:31:56Z",
    "delivered_at": "2023-11-07T05:31:56Z",
    "read_at": "2023-11-07T05:31:56Z",
    "failed_at": "2023-11-07T05:31:56Z",
    "status": "<string>",
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z",
    "deleted_at": "2023-11-07T05:31:56Z"
  }
}

{
  "error": "<string>",
  "details": "<string>"
}

{
  "error": "<string>",
  "details": "<string>"
}