App email that arrives while the user is still waiting.

curl https://wisesender.com/v1/email/send \
  -H "Authorization: Bearer ws_send_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "Acme <[email protected]>",
    "to": "[email protected]",
    "subject": "Your login code",
    "html": "<p>Your code is <b>{{code}}</b></p>",
    "merge_data": { "code": "482913" },
    "tags": { "type": "otp" }
  }'

await fetch('https://wisesender.com/v1/email/send', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.WISESENDER_SEND_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    from: 'Acme <[email protected]>',
    to: user.email,
    template_key: 'tpl_3f9a1c2b7d4e',
    merge_data: { name: user.name, code },
  }),
});

$payload = json_encode([
  'from' => 'Acme <[email protected]>',
  'to' => $user['email'],
  'subject' => 'Receipt #10482',
  'html' => $html,
]);
$ch = curl_init('https://wisesender.com/v1/email/send');
curl_setopt_array($ch, [
  CURLOPT_POST => true, CURLOPT_POSTFIELDS => $payload, CURLOPT_RETURNTRANSFER => true,
  CURLOPT_HTTPHEADER => ['Authorization: Bearer ' . getenv('WISESENDER_SEND_KEY'), 'Content-Type: application/json'],
]);
$response = json_decode(curl_exec($ch), true);