Send email to people who can actually receive it.

curl "https://wisesender.com/v1/[email protected]" \
  -H "X-API-Key: ws_live_YOUR_KEY"

# Response
{
  "email": "[email protected]",
  "status": "safe",
  "category": "safe",
  "score": 95,
  "mailbox_exists": true,
  "disposable": false,
  "suggestion": null
}

const res = await fetch(
  'https://wisesender.com/v1/verify?email=' + encodeURIComponent(email),
  { headers: { 'X-API-Key': process.env.WISESENDER_KEY } }
);
const result = await res.json();

if (result.status === 'invalid') {
  throw new Error('Please use a real email address');
}

import os, requests

r = requests.get(
    "https://wisesender.com/v1/verify",
    params={"email": email},
    headers={"X-API-Key": os.environ["WISESENDER_KEY"]},
    timeout=30,
)
result = r.json()
print(result["status"], result["score"])

$ch = curl_init('https://wisesender.com/v1/verify?email=' . urlencode($email));
curl_setopt_array($ch, [
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_HTTPHEADER => ['X-API-Key: ' . getenv('WISESENDER_KEY')],
]);
$result = json_decode(curl_exec($ch), true);

if ($result['status'] === 'invalid') { /* reject */ }