What the cleaner checks
The tool finds email candidates, normalizes case, removes duplicates, checks practical syntax and compares domains with a local disposable-provider list. Optional DNS inspection distinguishes MX, null MX, A/AAAA fallback and inconclusive DNS errors.
Limits
A technically clean address can still be nonexistent, reject mail or lack permission for contact. New disposable domains may be missing. DNS describes domain routing, not an individual mailbox.
Privacy: Optional DNS inspection sends domain names only to Cloudflare. Addresses and source text remain in your browser. It cannot verify individual mailboxes.