curl --request POST \
  --url https://{subdomain}.outseta.com/api/v1/email/campaigns/broadcasts/sendtestemail \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "BroadcastCampaign": {
    "Uid": "string",
    "_objectType": "string",
    "ActivityEventData": {},
    "SendDateTime": "string",
    "NextRunDateTime": "string",
    "Campaign": {
      "Uid": "string",
      "_objectType": "string",
      "Created": "string",
      "Updated": "string",
      "ActivityEventData": {},
      "Name": "string",
      "FromName": "string",
      "FromEmail": "string",
      "CampaignType": 1
    },
    "Message": {
      "Uid": "string",
      "_objectType": "string",
      "Created": "string",
      "Updated": "string",
      "ActivityEventData": {},
      "Template": {},
      "Name": "string",
      "Subject": "string",
      "PreviewText": "string",
      "Body": "string",
      "Design": "string",
      "CountSent": 0,
      "CountDelivered": 0,
      "CountBounce": 0,
      "CountSpam": 0,
      "CountOpen": 0,
      "CountClick": 0,
      "CountUnsubscribed": 0,
      "CountTotalOpen": 0,
      "CountTotalClick": 0,
      "IgnoredSpamBounce": 0,
      "IsBounceRatePaused": false,
      "IsSpamScorePaused": false,
      "EmailLinks": [],
      "SpamAssassinScore": 0,
      "SpamStatus": 0,
      "SpamReason": "string"
    },
    "RecipientData": "string",
    "EmailListUids": [
      "string"
    ],
    "SegmentUids": [
      "string"
    ],
    "Status": 1,
    "ErrorMessage": "string",
    "Tags": [
      {
        "Uid": "string",
        "_objectType": "string",
        "Created": "string",
        "Updated": "string",
        "ActivityEventData": {},
        "Name": "string",
        "SystemName": "string",
        "SystemDescription": "string",
        "TagColor": 1,
        "EntityType": 0
      }
    ]
  },
  "AdditionalRecipients": [
    "<string>"
  ]
}
'

import requests

url = "https://{subdomain}.outseta.com/api/v1/email/campaigns/broadcasts/sendtestemail"

payload = {
    "BroadcastCampaign": {
        "Uid": "string",
        "_objectType": "string",
        "ActivityEventData": {},
        "SendDateTime": "string",
        "NextRunDateTime": "string",
        "Campaign": {
            "Uid": "string",
            "_objectType": "string",
            "Created": "string",
            "Updated": "string",
            "ActivityEventData": {},
            "Name": "string",
            "FromName": "string",
            "FromEmail": "string",
            "CampaignType": 1
        },
        "Message": {
            "Uid": "string",
            "_objectType": "string",
            "Created": "string",
            "Updated": "string",
            "ActivityEventData": {},
            "Template": {},
            "Name": "string",
            "Subject": "string",
            "PreviewText": "string",
            "Body": "string",
            "Design": "string",
            "CountSent": 0,
            "CountDelivered": 0,
            "CountBounce": 0,
            "CountSpam": 0,
            "CountOpen": 0,
            "CountClick": 0,
            "CountUnsubscribed": 0,
            "CountTotalOpen": 0,
            "CountTotalClick": 0,
            "IgnoredSpamBounce": 0,
            "IsBounceRatePaused": False,
            "IsSpamScorePaused": False,
            "EmailLinks": [],
            "SpamAssassinScore": 0,
            "SpamStatus": 0,
            "SpamReason": "string"
        },
        "RecipientData": "string",
        "EmailListUids": ["string"],
        "SegmentUids": ["string"],
        "Status": 1,
        "ErrorMessage": "string",
        "Tags": [
            {
                "Uid": "string",
                "_objectType": "string",
                "Created": "string",
                "Updated": "string",
                "ActivityEventData": {},
                "Name": "string",
                "SystemName": "string",
                "SystemDescription": "string",
                "TagColor": 1,
                "EntityType": 0
            }
        ]
    },
    "AdditionalRecipients": ["<string>"]
}
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({
    BroadcastCampaign: {
      Uid: 'string',
      _objectType: 'string',
      ActivityEventData: {},
      SendDateTime: 'string',
      NextRunDateTime: 'string',
      Campaign: {
        Uid: 'string',
        _objectType: 'string',
        Created: 'string',
        Updated: 'string',
        ActivityEventData: {},
        Name: 'string',
        FromName: 'string',
        FromEmail: 'string',
        CampaignType: 1
      },
      Message: {
        Uid: 'string',
        _objectType: 'string',
        Created: 'string',
        Updated: 'string',
        ActivityEventData: {},
        Template: {},
        Name: 'string',
        Subject: 'string',
        PreviewText: 'string',
        Body: 'string',
        Design: 'string',
        CountSent: 0,
        CountDelivered: 0,
        CountBounce: 0,
        CountSpam: 0,
        CountOpen: 0,
        CountClick: 0,
        CountUnsubscribed: 0,
        CountTotalOpen: 0,
        CountTotalClick: 0,
        IgnoredSpamBounce: 0,
        IsBounceRatePaused: false,
        IsSpamScorePaused: false,
        EmailLinks: [],
        SpamAssassinScore: 0,
        SpamStatus: 0,
        SpamReason: 'string'
      },
      RecipientData: 'string',
      EmailListUids: ['string'],
      SegmentUids: ['string'],
      Status: 1,
      ErrorMessage: 'string',
      Tags: [
        {
          Uid: 'string',
          _objectType: 'string',
          Created: 'string',
          Updated: 'string',
          ActivityEventData: {},
          Name: 'string',
          SystemName: 'string',
          SystemDescription: 'string',
          TagColor: 1,
          EntityType: 0
        }
      ]
    },
    AdditionalRecipients: ['<string>']
  })
};

fetch('https://{subdomain}.outseta.com/api/v1/email/campaigns/broadcasts/sendtestemail', 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://{subdomain}.outseta.com/api/v1/email/campaigns/broadcasts/sendtestemail",
  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([
    'BroadcastCampaign' => [
        'Uid' => 'string',
        '_objectType' => 'string',
        'ActivityEventData' => [
                
        ],
        'SendDateTime' => 'string',
        'NextRunDateTime' => 'string',
        'Campaign' => [
                'Uid' => 'string',
                '_objectType' => 'string',
                'Created' => 'string',
                'Updated' => 'string',
                'ActivityEventData' => [
                                
                ],
                'Name' => 'string',
                'FromName' => 'string',
                'FromEmail' => 'string',
                'CampaignType' => 1
        ],
        'Message' => [
                'Uid' => 'string',
                '_objectType' => 'string',
                'Created' => 'string',
                'Updated' => 'string',
                'ActivityEventData' => [
                                
                ],
                'Template' => [
                                
                ],
                'Name' => 'string',
                'Subject' => 'string',
                'PreviewText' => 'string',
                'Body' => 'string',
                'Design' => 'string',
                'CountSent' => 0,
                'CountDelivered' => 0,
                'CountBounce' => 0,
                'CountSpam' => 0,
                'CountOpen' => 0,
                'CountClick' => 0,
                'CountUnsubscribed' => 0,
                'CountTotalOpen' => 0,
                'CountTotalClick' => 0,
                'IgnoredSpamBounce' => 0,
                'IsBounceRatePaused' => false,
                'IsSpamScorePaused' => false,
                'EmailLinks' => [
                                
                ],
                'SpamAssassinScore' => 0,
                'SpamStatus' => 0,
                'SpamReason' => 'string'
        ],
        'RecipientData' => 'string',
        'EmailListUids' => [
                'string'
        ],
        'SegmentUids' => [
                'string'
        ],
        'Status' => 1,
        'ErrorMessage' => 'string',
        'Tags' => [
                [
                                'Uid' => 'string',
                                '_objectType' => 'string',
                                'Created' => 'string',
                                'Updated' => 'string',
                                'ActivityEventData' => [
                                                                
                                ],
                                'Name' => 'string',
                                'SystemName' => 'string',
                                'SystemDescription' => 'string',
                                'TagColor' => 1,
                                'EntityType' => 0
                ]
        ]
    ],
    'AdditionalRecipients' => [
        '<string>'
    ]
  ]),
  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://{subdomain}.outseta.com/api/v1/email/campaigns/broadcasts/sendtestemail"

	payload := strings.NewReader("{\n  \"BroadcastCampaign\": {\n    \"Uid\": \"string\",\n    \"_objectType\": \"string\",\n    \"ActivityEventData\": {},\n    \"SendDateTime\": \"string\",\n    \"NextRunDateTime\": \"string\",\n    \"Campaign\": {\n      \"Uid\": \"string\",\n      \"_objectType\": \"string\",\n      \"Created\": \"string\",\n      \"Updated\": \"string\",\n      \"ActivityEventData\": {},\n      \"Name\": \"string\",\n      \"FromName\": \"string\",\n      \"FromEmail\": \"string\",\n      \"CampaignType\": 1\n    },\n    \"Message\": {\n      \"Uid\": \"string\",\n      \"_objectType\": \"string\",\n      \"Created\": \"string\",\n      \"Updated\": \"string\",\n      \"ActivityEventData\": {},\n      \"Template\": {},\n      \"Name\": \"string\",\n      \"Subject\": \"string\",\n      \"PreviewText\": \"string\",\n      \"Body\": \"string\",\n      \"Design\": \"string\",\n      \"CountSent\": 0,\n      \"CountDelivered\": 0,\n      \"CountBounce\": 0,\n      \"CountSpam\": 0,\n      \"CountOpen\": 0,\n      \"CountClick\": 0,\n      \"CountUnsubscribed\": 0,\n      \"CountTotalOpen\": 0,\n      \"CountTotalClick\": 0,\n      \"IgnoredSpamBounce\": 0,\n      \"IsBounceRatePaused\": false,\n      \"IsSpamScorePaused\": false,\n      \"EmailLinks\": [],\n      \"SpamAssassinScore\": 0,\n      \"SpamStatus\": 0,\n      \"SpamReason\": \"string\"\n    },\n    \"RecipientData\": \"string\",\n    \"EmailListUids\": [\n      \"string\"\n    ],\n    \"SegmentUids\": [\n      \"string\"\n    ],\n    \"Status\": 1,\n    \"ErrorMessage\": \"string\",\n    \"Tags\": [\n      {\n        \"Uid\": \"string\",\n        \"_objectType\": \"string\",\n        \"Created\": \"string\",\n        \"Updated\": \"string\",\n        \"ActivityEventData\": {},\n        \"Name\": \"string\",\n        \"SystemName\": \"string\",\n        \"SystemDescription\": \"string\",\n        \"TagColor\": 1,\n        \"EntityType\": 0\n      }\n    ]\n  },\n  \"AdditionalRecipients\": [\n    \"<string>\"\n  ]\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://{subdomain}.outseta.com/api/v1/email/campaigns/broadcasts/sendtestemail")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"BroadcastCampaign\": {\n    \"Uid\": \"string\",\n    \"_objectType\": \"string\",\n    \"ActivityEventData\": {},\n    \"SendDateTime\": \"string\",\n    \"NextRunDateTime\": \"string\",\n    \"Campaign\": {\n      \"Uid\": \"string\",\n      \"_objectType\": \"string\",\n      \"Created\": \"string\",\n      \"Updated\": \"string\",\n      \"ActivityEventData\": {},\n      \"Name\": \"string\",\n      \"FromName\": \"string\",\n      \"FromEmail\": \"string\",\n      \"CampaignType\": 1\n    },\n    \"Message\": {\n      \"Uid\": \"string\",\n      \"_objectType\": \"string\",\n      \"Created\": \"string\",\n      \"Updated\": \"string\",\n      \"ActivityEventData\": {},\n      \"Template\": {},\n      \"Name\": \"string\",\n      \"Subject\": \"string\",\n      \"PreviewText\": \"string\",\n      \"Body\": \"string\",\n      \"Design\": \"string\",\n      \"CountSent\": 0,\n      \"CountDelivered\": 0,\n      \"CountBounce\": 0,\n      \"CountSpam\": 0,\n      \"CountOpen\": 0,\n      \"CountClick\": 0,\n      \"CountUnsubscribed\": 0,\n      \"CountTotalOpen\": 0,\n      \"CountTotalClick\": 0,\n      \"IgnoredSpamBounce\": 0,\n      \"IsBounceRatePaused\": false,\n      \"IsSpamScorePaused\": false,\n      \"EmailLinks\": [],\n      \"SpamAssassinScore\": 0,\n      \"SpamStatus\": 0,\n      \"SpamReason\": \"string\"\n    },\n    \"RecipientData\": \"string\",\n    \"EmailListUids\": [\n      \"string\"\n    ],\n    \"SegmentUids\": [\n      \"string\"\n    ],\n    \"Status\": 1,\n    \"ErrorMessage\": \"string\",\n    \"Tags\": [\n      {\n        \"Uid\": \"string\",\n        \"_objectType\": \"string\",\n        \"Created\": \"string\",\n        \"Updated\": \"string\",\n        \"ActivityEventData\": {},\n        \"Name\": \"string\",\n        \"SystemName\": \"string\",\n        \"SystemDescription\": \"string\",\n        \"TagColor\": 1,\n        \"EntityType\": 0\n      }\n    ]\n  },\n  \"AdditionalRecipients\": [\n    \"<string>\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{subdomain}.outseta.com/api/v1/email/campaigns/broadcasts/sendtestemail")

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  \"BroadcastCampaign\": {\n    \"Uid\": \"string\",\n    \"_objectType\": \"string\",\n    \"ActivityEventData\": {},\n    \"SendDateTime\": \"string\",\n    \"NextRunDateTime\": \"string\",\n    \"Campaign\": {\n      \"Uid\": \"string\",\n      \"_objectType\": \"string\",\n      \"Created\": \"string\",\n      \"Updated\": \"string\",\n      \"ActivityEventData\": {},\n      \"Name\": \"string\",\n      \"FromName\": \"string\",\n      \"FromEmail\": \"string\",\n      \"CampaignType\": 1\n    },\n    \"Message\": {\n      \"Uid\": \"string\",\n      \"_objectType\": \"string\",\n      \"Created\": \"string\",\n      \"Updated\": \"string\",\n      \"ActivityEventData\": {},\n      \"Template\": {},\n      \"Name\": \"string\",\n      \"Subject\": \"string\",\n      \"PreviewText\": \"string\",\n      \"Body\": \"string\",\n      \"Design\": \"string\",\n      \"CountSent\": 0,\n      \"CountDelivered\": 0,\n      \"CountBounce\": 0,\n      \"CountSpam\": 0,\n      \"CountOpen\": 0,\n      \"CountClick\": 0,\n      \"CountUnsubscribed\": 0,\n      \"CountTotalOpen\": 0,\n      \"CountTotalClick\": 0,\n      \"IgnoredSpamBounce\": 0,\n      \"IsBounceRatePaused\": false,\n      \"IsSpamScorePaused\": false,\n      \"EmailLinks\": [],\n      \"SpamAssassinScore\": 0,\n      \"SpamStatus\": 0,\n      \"SpamReason\": \"string\"\n    },\n    \"RecipientData\": \"string\",\n    \"EmailListUids\": [\n      \"string\"\n    ],\n    \"SegmentUids\": [\n      \"string\"\n    ],\n    \"Status\": 1,\n    \"ErrorMessage\": \"string\",\n    \"Tags\": [\n      {\n        \"Uid\": \"string\",\n        \"_objectType\": \"string\",\n        \"Created\": \"string\",\n        \"Updated\": \"string\",\n        \"ActivityEventData\": {},\n        \"Name\": \"string\",\n        \"SystemName\": \"string\",\n        \"SystemDescription\": \"string\",\n        \"TagColor\": 1,\n        \"EntityType\": 0\n      }\n    ]\n  },\n  \"AdditionalRecipients\": [\n    \"<string>\"\n  ]\n}"

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

"string"