How to create a Private Domain for your Temporary Email

A private domain for temporary email gives you total control. Configure MX, SPF, and DKIM records to improve deliverability.

Use subdomains to separate environments and rotate domains to avoid blacklists. The result: a robust and scalable temporary email service.

Quick guide: 1) point MX record to your provider, 2) verify TXT for SPF, 3) publish DKIM selector, 4) enable DMARC with gradual policy (p=none → quarantine → reject).

Create subdomains like inbox.yourdomain.com or temp.yourdomain.com to isolate reputation and facilitate rotation without affecting your root domain.

Monitor reputation with Postmaster and SNDS. If you detect bounces or complaints, pause the subdomain and rotate to another pool.

Automate provisioning with IaC (Terraform) to version your DNS and avoid manual changes prone to error.

Don't forget valid TLS certificates and HSTS if you publish a panel; transport security reinforces user trust.

DNS checklist: MX pointing to your MTA, SPF with provider include, active DKIM selector, DMARC with reporting to your technical email.

Anti-abuse policies: limit generation rate per IP and sign API requests. This protects your domain from malicious uses.