curl --request POST \
  --url https://api.messaging.phonovation.com/ccaas/1/web-forms/{id}/submissions \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "from": "from.testmail@email.test",
  "subject": "Test Subject",
  "cc": [
    "cc1@email.test",
    "cc2@email.test"
  ],
  "content": "Example text file.",
  "attachmentIds": [
    "dd68c1ec-1997-4e90-add6-b36dfd2b80a3"
  ]
}
'

import requests

url = "https://api.messaging.phonovation.com/ccaas/1/web-forms/{id}/submissions"

payload = {
    "from": "from.testmail@email.test",
    "subject": "Test Subject",
    "cc": ["cc1@email.test", "cc2@email.test"],
    "content": "Example text file.",
    "attachmentIds": ["dd68c1ec-1997-4e90-add6-b36dfd2b80a3"]
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

using RestSharp;


var options = new RestClientOptions("https://api.messaging.phonovation.com/ccaas/1/web-forms/{id}/submissions");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddHeader("Authorization", "<api-key>");
request.AddJsonBody("{\n  \"from\": \"from.testmail@email.test\",\n  \"subject\": \"Test Subject\",\n  \"cc\": [\n    \"cc1@email.test\",\n    \"cc2@email.test\"\n  ],\n  \"content\": \"Example text file.\",\n  \"attachmentIds\": [\n    \"dd68c1ec-1997-4e90-add6-b36dfd2b80a3\"\n  ]\n}", false);
var response = await client.PostAsync(request);

Console.WriteLine("{0}", response.Content);

HttpResponse<String> response = Unirest.post("https://api.messaging.phonovation.com/ccaas/1/web-forms/{id}/submissions")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"from\": \"from.testmail@email.test\",\n  \"subject\": \"Test Subject\",\n  \"cc\": [\n    \"cc1@email.test\",\n    \"cc2@email.test\"\n  ],\n  \"content\": \"Example text file.\",\n  \"attachmentIds\": [\n    \"dd68c1ec-1997-4e90-add6-b36dfd2b80a3\"\n  ]\n}")
  .asString();

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.messaging.phonovation.com/ccaas/1/web-forms/{id}/submissions",
  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([
    'from' => 'from.testmail@email.test',
    'subject' => 'Test Subject',
    'cc' => [
        'cc1@email.test',
        'cc2@email.test'
    ],
    'content' => 'Example text file.',
    'attachmentIds' => [
        'dd68c1ec-1997-4e90-add6-b36dfd2b80a3'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    from: 'from.testmail@email.test',
    subject: 'Test Subject',
    cc: ['cc1@email.test', 'cc2@email.test'],
    content: 'Example text file.',
    attachmentIds: ['dd68c1ec-1997-4e90-add6-b36dfd2b80a3']
  })
};

fetch('https://api.messaging.phonovation.com/ccaas/1/web-forms/{id}/submissions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "conversationId": "b468c1ec-1997-4e90-add6-b36dfd2b80a3"
}

{
  "requestError": {
    "serviceException": {
      "messageId": "BAD_REQUEST",
      "text": "Invalid request body."
    }
  }
}

{
  "requestError": {
    "serviceException": {
      "messageId": "UNAUTHORIZED",
      "text": "Unauthorized"
    }
  }
}

{
  "requestError": {
    "serviceException": {
      "messageId": "FORBIDDEN",
      "text": "Forbidden"
    }
  }
}

{
  "requestError": {
    "serviceException": {
      "messageId": "NOT_FOUND",
      "text": "Invalid id 'e43bc422-09c9-4591-8b9d-82debcf04e0d' given! No such entity exists."
    }
  }
}

{
  "requestError": {
    "serviceException": {
      "messageId": "GENERAL_ERROR",
      "text": "Something went wrong. Please contact support."
    }
  }
}