Bouncer is an email verification company based in Poland. Its tools help teams check whether addresses on a mailing list are valid before sending.
Teams can verify lists in the web app or connect verification through an API and marketing platform integrations. Bouncer also offers tools for checking deliverability, including inbox placement and email authentication.
Verification helps identify invalid or risky addresses. It does not guarantee that a message will arrive in the inbox; teams still need to monitor their sending setup and campaign performance.