Free Online Tool
Email Privacy Checker
Instantly validate an email address format, check its domain structure, and detect if it belongs to a known disposable email provider.
Enter an email address above and press Check or hit Enter
What We Check
Four instant checks — all run locally, all private.
Instant Analysis
Results appear in real-time with no server round-trip required.
Privacy First
Your email input is never stored or sent to any external service.
Disposable Detection
Checks against a curated list of known throwaway email providers.
RFC Compliant
Validates format against RFC 5322 email address specifications.
Protect Your Real Email
Use a temporary email address instead of your real one when signing up for services you are not sure about.