Your app's emails, from your own address.

const res = await fetch('https://send.email.eu/api/v1/send', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.EMAIL_EU_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    from: 'Shop <orders@yourshop.nl>',
    to: 'anna@example.com',
    subject: 'Your order is on its way',
    text: 'Hi Anna, your order left our warehouse today.',
  }),
});

const { id } = await res.json(); // see what happened to it in the log

import os
import requests

res = requests.post(
    "https://send.email.eu/api/v1/send",
    headers={"Authorization": f"Bearer {os.environ['EMAIL_EU_KEY']}"},
    json={
        "from": "Shop <orders@yourshop.nl>",
        "to": "anna@example.com",
        "subject": "Your order is on its way",
        "text": "Hi Anna, your order left our warehouse today.",
    },
)

message_id = res.json()["id"]  # see what happened to it in the log

require "net/http"
require "json"

res = Net::HTTP.post(
  URI("https://send.email.eu/api/v1/send"),
  {
    from: "Shop <orders@yourshop.nl>",
    to: "anna@example.com",
    subject: "Your order is on its way",
    text: "Hi Anna, your order left our warehouse today."
  }.to_json,
  "Authorization" => "Bearer #{ENV.fetch("EMAIL_EU_KEY")}",
  "Content-Type" => "application/json"
)

id = JSON.parse(res.body)["id"] # see what happened to it in the log

$ch = curl_init('https://send.email.eu/api/v1/send');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'Authorization: Bearer ' . getenv('EMAIL_EU_KEY'),
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS => json_encode([
        'from' => 'Shop <orders@yourshop.nl>',
        'to' => 'anna@example.com',
        'subject' => 'Your order is on its way',
        'text' => 'Hi Anna, your order left our warehouse today.',
    ]),
]);

$id = json_decode(curl_exec($ch), true)['id']; // see what happened to it in the log

body, _ := json.Marshal(map[string]string{
	"from":    "Shop <orders@yourshop.nl>",
	"to":      "anna@example.com",
	"subject": "Your order is on its way",
	"text":    "Hi Anna, your order left our warehouse today.",
})

req, _ := http.NewRequest("POST", "https://send.email.eu/api/v1/send", bytes.NewReader(body))
req.Header.Set("Authorization", "Bearer "+os.Getenv("EMAIL_EU_KEY"))
req.Header.Set("Content-Type", "application/json")

res, err := http.DefaultClient.Do(req) // 202: queued, with its id

let res = reqwest::Client::new()
    .post("https://send.email.eu/api/v1/send")
    .bearer_auth(std::env::var("EMAIL_EU_KEY")?)
    .json(&serde_json::json!({
        "from": "Shop <orders@yourshop.nl>",
        "to": "anna@example.com",
        "subject": "Your order is on its way",
        "text": "Hi Anna, your order left our warehouse today.",
    }))
    .send()
    .await?; // 202: queued, with its id

%{"id" => id} =
  Req.post!("https://send.email.eu/api/v1/send",
    auth: {:bearer, System.fetch_env!("EMAIL_EU_KEY")},
    json: %{
      from: "Shop <orders@yourshop.nl>",
      to: "anna@example.com",
      subject: "Your order is on its way",
      text: "Hi Anna, your order left our warehouse today."
    }
  ).body # see what happened to it in the log

curl https://send.email.eu/api/v1/send \
  -H "Authorization: Bearer $EMAIL_EU_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "Shop <orders@yourshop.nl>",
    "to": "anna@example.com",
    "subject": "Your order is on its way",
    "text": "Hi Anna, your order left our warehouse today."
  }'