Free tool

Detect privacy relay and forwarding providers

Identify forwarding providers such as Apple Hide My Email and common Gmail alias patterns.

Why this signal matters

Privacy relays help users avoid sharing their real email. For product teams, that means recovery flows and support verification need different handling. Relay detection separates masked identities from direct personal inboxes so you can route and score leads accurately.

FAQ

What is a relay domain?
A domain used by privacy forwarding services that mask the user's real inbox behind a proxy address.
Are relay addresses disposable?
No. Relays are often legitimate privacy tools. Treat them as masked identity, not throwaway abuse.
Why flag relay addresses?
Account recovery, support identity, and engagement metrics differ when the address is a forwarder, not a direct inbox.

Related tools

Need volume, webhooks, or team access?

The same detection stack powers the EmailGuard API. Start free, then scale with scoped API keys and predictable rate limits.