How do I set up Notify with my sending domain and API key?

If you mean Notify (notify.cx), the setup is basically: API key → verify your sending domain → send through the API. Notify’s official site confirms that sandbox sending works immediately, while production sending requires a verified domain. Notify+1

1. Create your API key

In your Notify dashboard, open Credentials and create an API key.

Store it as a server-side environment variable:

NOTIFY_API_KEY=your_api_key_here

Keep this secret—don't put it in browser/client-side code or commit it to Git. Notify authenticates requests using the x-api-key header. In Plain English+1

2. Add your sending domain

In Notify, go to Domains and add the domain you want to send from, for example:

example.com

Notify will give you DNS records to add. Publish the records exactly as displayed by Notify—SPF and DKIM are the important authentication records; DMARC can also be configured for your domain. Notify+1

If your DNS is managed by Cloudflare, GoDaddy, Route 53, etc., add those records in that provider's DNS settings.

Then wait for Notify to show the domain as verified. DNS propagation can take up to roughly 24–48 hours. Notify

3. Send from the verified domain

Once verified, your from address needs to use that domain:

const response = await fetch('https://notify.cx/api/email/send', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-api-key': process.env.NOTIFY_API_KEY
  },
  body: JSON.stringify({
    from: 'noreply@example.com',
    to: 'customer@example.com',
    subject: 'Welcome!',
    message: '<h1>Welcome!</h1><p>Thanks for signing up.</p>'
  })
});

const data = await response.json();

The API endpoint is POST /api/email/send, and the basic request contains to, from, subject, and message. Notify

4. Test before going live

You don't have to wait for domain verification to start testing your integration—Notify provides sandbox/test sending. Once your domain is verified, switch the from address to your real domain and use the production endpoint. Notify

In short:

Your app
   │
   │ x-api-key
   ▼
Notify API
   │
   │ from: noreply@example.com
   ▼
Verified example.com
   │
   ├── SPF
   └── DKIM

Notify official website

If you tell me where your DNS is hosted (Cloudflare, GoDaddy, Squarespace, Route 53, etc.) and what stack you're using (Next.js, Laravel, Python, WordPress, etc.), I can give you the exact setup steps.