Custom Domains for Newsletter Landing Pages

Why custom domains matter for newsletter platforms

Substack made newsletter writers think hard about ownership: of the audience, of the brand, of the URL. Letting a writer publish at newsletter.acme.com instead of acme.yoursubdomain.com is table stakes for the next wave of newsletter platforms.

What your users get

• Publication and signup page on the writer's domain
• Email confirmation links from a domain they own
• Better deliverability than subdomain-only setups

How it works in 3 steps

1. Your user types their hostname (newsletter.acme.com) into your UI.
2. your newsletter platform 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": "newsletter.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.