HTTPS custom tracking domains for email platforms
Branded click and open links need a certificate for every customer's tracking hostname. Here is how to provide one without sending each customer to a CDN.
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Custom domains, explained for SaaS teams
We build and operate the custom-domain edge for SaaS teams. These articles share how to connect customer DNS, automate HTTPS, protect tenant traffic, and keep domains healthy as your product grows.
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Articles
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Email
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TLS
Caddy on-demand TLS vs a managed service for customer domains
Caddy can issue a certificate for a customer's domain on the first request. Here is what it takes to run that in production, and when it is enough.
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SSL
Let's Encrypt rate limits for SaaS custom domains
Most limits never bite. A few do, during bulk onboarding, broken customer DNS and renewal waves. This post covers which ones, and how to plan around them.
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Security
Custom domain security for multi-tenant SaaS
Combine safe hostname claims and removal with WAF, DDoS protection, Edge Verify, and ongoing domain monitoring.
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Product design
A custom domain onboarding checklist customers can follow
Replace a vague pending badge with five observable checks and specific customer-facing actions.
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DNS
Apex domains for SaaS: DNS choices and SSL
A plain CNAME can't live at the root. Compare an A record, a provider alias, and a redirect with their HTTPS trade-offs.
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Comparison
How to choose the best custom domain API for your SaaS
Compare Approximated, Cloudflare for SaaS, and Entri Power on production tooling, protection, support, deployment paths, and costs.
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Guide
Custom domains for SaaS: a production guide
Build the full domain lifecycle with DNS, HTTPS, tenant routing, edge protection, monitoring, and a path to self-hosting.
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