Check any address in seconds. We verify the format, look up the domain's MX records, and flag disposable and role-based addresses — no signup required.
The free checker runs the fast, non-intrusive layers of the BounceShift engine. No mail is sent and nothing is stored.
Yes. The format, MX, disposable, and role checks are completely free with no signup or credit card. Full SMTP mailbox verification and bulk list validation are available on a free account with 100 credits.
Not on its own. The free tool stops before the SMTP mailbox probe, so it confirms the domain can receive mail but not that the specific mailbox exists. Signing up unlocks SMTP verification for a definitive answer.
No. The address is checked in real time and nothing is saved to our database. We do not log or sell the addresses entered into this tool.
This tool checks one address at a time. To validate a CSV of up to 100,000 addresses in parallel, create a free account and use batch validation or the API.