Verifying inboxes since 2017.

So we built our own. The first version was a script that opened an SMTP session with each domain's mail server, asked whether the mailbox existed, and wrote the reply code into a spreadsheet. It was slow and ugly, and it was right far more often than anything we had paid for.

Verifyre grew from that script. The engine still works the same way, now in parallel, with a catch-all probe, provider policies, daily-refreshed disposable lists and a score that compresses everything we learned into one number. What has not changed is the rule we set on day one: never guess, and always show the transcript.

Today Verifyre verifies lists for agencies, marketplaces, SaaS companies and media brands, sits inside twenty newsletter and CRM platforms, and validates sign-ups on forms through the widget and the WordPress plugin. We are a small team, which is why the product does the talking.