Setting up Email Delivery

npm install mailcub
const mailcub = require('mailcub');
const secretKey = 'your-secret-key';
const emailBody = {
  email_from: 'user@yourdomain.com',
  receiver: 'user@example.com',
  subject: 'Welcome to MailCub',
  html: '<h1>Hello</h1><p>Your email was sent successfully.</p>',
  attachment: 'attachment_path' // optional
};
mailcub.sendMail(emailBody, secretKey)
  .then(() => {
    console.log('Email sent successfully');
  })
  .catch((error) => {
    console.error('Error sending email:', error);
  });

<?php
function sendEmailViaMailCub($receiver, $subject, $htmlContent, $attachment = null)
{
    // ✅ temp variables (no getenv)
    $MAILCUB_API_KEY = "Bearer YOUR_API_KEY";
    $EMAIL_FROM      = "user@yourdomain.com";

    if (!$MAILCUB_API_KEY) {
        throw new Exception("MAILCUB_API_KEY is not set");
    }
    if (!$EMAIL_FROM) {
        throw new Exception("EMAIL_FROM is not set");
    }

    $emailBody = [
        "email_from" => $EMAIL_FROM,
        "receiver"   => $receiver,
        "subject"    => $subject,
        "html"       => $htmlContent
    ];

    if ($attachment) {
        $emailBody["attachment"] = $attachment;
    }

    // ✅ updated endpoint (matches your docs samples)
    $ch = curl_init("https://api.mailcub.com/v1/send");

    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_POST => true,
        CURLOPT_HTTPHEADER => [
            "Content-Type: application/json",
            "x-sh-key: " . $MAILCUB_API_KEY
        ],
        CURLOPT_POSTFIELDS => json_encode($emailBody)
    ]);

    $resp curl_exec($ch);

    if ($resp= false) {
        throw new Exception("cURL Error: " . curl_error($ch));
    }

    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    if ($httpCode !== 200) {
        $result = json_decode($response, true);
        throw new Exception($result['message'] ?? 'MailCub API error');
    }

    return json_decode($response, true);
}

pip install requests

import os
import requests
MAILCUB_API_KEY = os.getenv("MAILCUB_API_KEY")
EMAIL_FROM = os.getenv("EMAIL_FROM")
if not MAILCUB_API_KEY or not EMAIL_FROM:
    raise Exception("MAILCUB_API_KEY or EMAIL_FROM is not set")
url = "https://api.mail.mailcub.com/api/send_email"
payload = {
    "email_from": EMAIL_FROM,
    "receiver": "user@example.com",
    "subject": "Welcome to MailCub",
    "html": "<h1>Hello</h1><p>Email sent successfully.</p>"
}
headers = {
    "Content-Type": "application/json",
    "x-sh-key": MAILCUB_API_KEY
}
resp requests.post(url, json=payload, headers=headers)
if response.status_code == 200:
    print("Email sent successfully")
else:
    print("Error sending email:", response.text)

curl -X POST "https://api.mailcub.com/v1/send" \
  -H "Authorization: Bearer your-secret-key" \
  -F "email_from=user@yourdomain.com" \
  -F "receiver=user@example.com" \
  -F "subject=Welcome to MailCub" \
  -F "html=<h1>Hello</h1><p>Your email was sent successfully.</p>" \
  -F "attachment=@/absolute/path/to/file.pdf"