Servidor SMTP Dedicado com API de Email Transacional

curl --location 'https://api.iporto.com.br/api/panel/application/delivery/smtp/queue/api/delivery' \
--header 'Content-Type: application/json' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer <SEU_TOKEN_JWT_AQUI>' \
--data-raw '{
  "subject": "E-mail iPORTO",
  "from": "no-reply@meu-dominio.com.br",
  "from_name": "iPORTO",
  "address_to": "contato@cliente.com",
  "html_body": "iPORTO! <a href=\"https://iporto.com.br/pricing/smtp\">SMTP</a>",
  "attachments": [
    { "path": "https://iporto.com.br/assets/images/logo.png", "as": "logo-da-iporto.png", "mime": "image/png" }
  ],
  "headers": { "MinhaChaveUnica": "1984" },
  "tags": ["iPORTO", "id:24"],
  "tracking_settings": { "track_open": "yes", "track_link": "yes", "track_host": "track-s1" }
}'

// npm i nodemailer
const nodemailer = require('nodemailer');

const transporter = nodemailer.createTransport({
  host: 'smtp-avancado.com',
  port: 587,
  secure: false,
  auth: { user: process.env.IPORTO_SMTP_USER, pass: process.env.IPORTO_SMTP_PASS },
});

async function enviar() {
  await transporter.sendMail({
    from: 'no-reply@meu-dominio.com.br',
    to: 'contato@cliente.com',
    subject: 'E-mail iPORTO',
    html: 'Olá da iPORTO!',
  });
}

enviar().catch(console.error);

# Envio via SMTP (padrão)
import os, smtplib
from email.message import EmailMessage

msg = EmailMessage()
msg['Subject'] = 'E-mail iPORTO'
msg['From'] = 'no-reply@meu-dominio.com.br'
msg['To'] = 'contato@cliente.com'
msg.set_content('Olá da iPORTO!', subtype='html')

with smtplib.SMTP('smtp-avancado.com', 587) as s:
    s.starttls()
    s.login(os.getenv('IPORTO_SMTP_USER'), os.getenv('IPORTO_SMTP_PASS'))
    s.send_message(msg)

<?php
// composer require phpmailer/phpmailer
use PHPMailer\PHPMailer\PHPMailer;

$mail = new PHPMailer(true);
$mail->isSMTP();
$mail->Host = 'smtp-avancado.com';
$mail->Port = 587;
$mail->SMTPAuth = true;
$mail->Username = getenv('IPORTO_SMTP_USER');
$mail->Password = getenv('IPORTO_SMTP_PASS');
$mail->setFrom('no-reply@meu-dominio.com.br', 'iPORTO');
$mail->addAddress('contato@cliente.com');
$mail->Subject = 'E-mail iPORTO';
$mail->msgHTML('Olá da iPORTO!');
$mail->send();