Custom Domains for Appointment Scheduling

Why custom domains matter for scheduling platforms

Cal.com taught the category that custom domains are the difference between feeling like a scheduling tool and feeling like infrastructure. book.acme.com is what the customer's email signature, business card, and Google ad will eventually want to point at.

What your users get

• Booking page on the customer's domain
• Confirmation emails on the customer's brand
• TLS, renewals, and edge routing handled forever

How it works in 3 steps

1. Your user types their hostname (book.acme.com) into your UI.
2. your scheduling app POSTs to the Domainee API to register it and gets back the CNAME the user needs to add at their DNS provider.
3. We monitor DNS, issue the cert via Let's Encrypt, and webhook back when it's live. Usually about 60 seconds.

The code

curl -X POST https://api.domainee.dev/v1/domains \
  -H "Authorization: Bearer $DOMAINEE_API_KEY" \
  -H "content-type: application/json" \
  -d '{
    "hostname": "book.acme.com",
    "originUrl": "https://app.your-saas.com",
    "mode": "proxy",
    "redirectWww": true,
    "metadata": { "workspaceId": "your-internal-id" }
  }'

The response includes a dnsRecords array (usually one CNAME). Show that to your user, tell them to paste it at their DNS provider, and we'll handle the rest.

For the full walkthrough, see How to let users connect a custom domain to your SaaS.

Pricing

Your first 50 customer hostnames and 100 GB of bandwidth every month are free. After that: $0.20 per domain (graduated to $0.10 at scale), $0.05/GB above 400 GB. No monthly minimum, no contract, no sales call.