Email verifier

What this tool does not do matters as much as what it does. A browser cannot open the raw SMTP connection a mailbox probe needs, so whether a specific mailbox exists is never claimed here; any service saying otherwise from a page like this is guessing. The disposable, free and role lists are small curated snapshots, not exhaustive registries, and a missing MX record does not always mean undeliverable: a minority of senders fall back to the domain's A or AAAA record. Format rules follow the common unquoted-atom profile; quoted local parts and IP-literal domains are flagged as unverified rather than guessed at.