curl --request POST \
  --url https://api.simpu.co/email/send \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "recipients": "john@acme.com,mack@acme.com",
  "sender_id": "jane@acme.com",
  "content": "Hello, this is just a test.",
  "from_name": "John from Acme",
  "subject": "This is a test!!!",
  "reply_to": "no-reply@acme.com",
  "external_ref": "674535b2b39158b9aae90188fcec23eb",
  "callback": "https://example.com/email/delivery_report",
  "template_id": "674535b2b39158b9aae90188fcec23eb",
  "personalisation": [
    {
      "to": "mack@acme.com",
      "substitutions": {
        "name": "Mack from Acme"
      }
    }
  ]
}
'

import requests

url = "https://api.simpu.co/email/send"

payload = {
    "recipients": "john@acme.com,mack@acme.com",
    "sender_id": "jane@acme.com",
    "content": "Hello, this is just a test.",
    "from_name": "John from Acme",
    "subject": "This is a test!!!",
    "reply_to": "no-reply@acme.com",
    "external_ref": "674535b2b39158b9aae90188fcec23eb",
    "callback": "https://example.com/email/delivery_report",
    "template_id": "674535b2b39158b9aae90188fcec23eb",
    "personalisation": [
        {
            "to": "mack@acme.com",
            "substitutions": { "name": "Mack from Acme" }
        }
    ]
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    recipients: 'john@acme.com,mack@acme.com',
    sender_id: 'jane@acme.com',
    content: 'Hello, this is just a test.',
    from_name: 'John from Acme',
    subject: 'This is a test!!!',
    reply_to: 'no-reply@acme.com',
    external_ref: '674535b2b39158b9aae90188fcec23eb',
    callback: 'https://example.com/email/delivery_report',
    template_id: '674535b2b39158b9aae90188fcec23eb',
    personalisation: [{to: 'mack@acme.com', substitutions: {name: 'Mack from Acme'}}]
  })
};

fetch('https://api.simpu.co/email/send', 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.simpu.co/email/send",
  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([
    'recipients' => 'john@acme.com,mack@acme.com',
    'sender_id' => 'jane@acme.com',
    'content' => 'Hello, this is just a test.',
    'from_name' => 'John from Acme',
    'subject' => 'This is a test!!!',
    'reply_to' => 'no-reply@acme.com',
    'external_ref' => '674535b2b39158b9aae90188fcec23eb',
    'callback' => 'https://example.com/email/delivery_report',
    'template_id' => '674535b2b39158b9aae90188fcec23eb',
    'personalisation' => [
        [
                'to' => 'mack@acme.com',
                'substitutions' => [
                                'name' => 'Mack from Acme'
                ]
        ]
    ]
  ]),
  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;
}

package main

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

func main() {

	url := "https://api.simpu.co/email/send"

	payload := strings.NewReader("{\n  \"recipients\": \"john@acme.com,mack@acme.com\",\n  \"sender_id\": \"jane@acme.com\",\n  \"content\": \"Hello, this is just a test.\",\n  \"from_name\": \"John from Acme\",\n  \"subject\": \"This is a test!!!\",\n  \"reply_to\": \"no-reply@acme.com\",\n  \"external_ref\": \"674535b2b39158b9aae90188fcec23eb\",\n  \"callback\": \"https://example.com/email/delivery_report\",\n  \"template_id\": \"674535b2b39158b9aae90188fcec23eb\",\n  \"personalisation\": [\n    {\n      \"to\": \"mack@acme.com\",\n      \"substitutions\": {\n        \"name\": \"Mack from Acme\"\n      }\n    }\n  ]\n}")

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

	req.Header.Add("Authorization", "<api-key>")
	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.simpu.co/email/send")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"recipients\": \"john@acme.com,mack@acme.com\",\n  \"sender_id\": \"jane@acme.com\",\n  \"content\": \"Hello, this is just a test.\",\n  \"from_name\": \"John from Acme\",\n  \"subject\": \"This is a test!!!\",\n  \"reply_to\": \"no-reply@acme.com\",\n  \"external_ref\": \"674535b2b39158b9aae90188fcec23eb\",\n  \"callback\": \"https://example.com/email/delivery_report\",\n  \"template_id\": \"674535b2b39158b9aae90188fcec23eb\",\n  \"personalisation\": [\n    {\n      \"to\": \"mack@acme.com\",\n      \"substitutions\": {\n        \"name\": \"Mack from Acme\"\n      }\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.simpu.co/email/send")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"recipients\": \"john@acme.com,mack@acme.com\",\n  \"sender_id\": \"jane@acme.com\",\n  \"content\": \"Hello, this is just a test.\",\n  \"from_name\": \"John from Acme\",\n  \"subject\": \"This is a test!!!\",\n  \"reply_to\": \"no-reply@acme.com\",\n  \"external_ref\": \"674535b2b39158b9aae90188fcec23eb\",\n  \"callback\": \"https://example.com/email/delivery_report\",\n  \"template_id\": \"674535b2b39158b9aae90188fcec23eb\",\n  \"personalisation\": [\n    {\n      \"to\": \"mack@acme.com\",\n      \"substitutions\": {\n        \"name\": \"Mack from Acme\"\n      }\n    }\n  ]\n}"

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

{
  "id": "674535b2b39158b9aae90188fcec23eb",
  "recipients": [
    "mack@acme.com"
  ],
  "sender_id": "john@acme.com",
  "external_ref": "674535b2b39158b9aae90188fcec23eb",
  "callback": "https://example.com/email/delivery_report",
  "template_id": "674535b2b39158b9aae90188fcec23eb",
  "from_name": "John from Acme",
  "personalisation": [
    {
      "to": "mack@acme.com",
      "substitutions": {
        "name": "Mack from Acme"
      }
    }
  ],
  "created_datetime": "2024-06-28T23:56:38.128604+00:00",
  "updated_datetime": "2024-06-28T23:56:38.128604+00:00",
  "meta": {
    "method": "POST",
    "resource": "/email/send",
    "estimate": {
      "available_balance": 1000.5,
      "charge": 0.33
    }
  }
}

{
  "status": 200,
  "message": "Invalid request",
  "errors": [
    {
      "field": "name",
      "message": "Error in field: 'name' Field required.",
      "type": "missing"
    }
  ]
}