About this video

This is for anyone who sends email or runs a signup form. A bad address doesn't only waste one email. It bounces, and too many bounces make mail providers stop trusting you.

Verification runs in layers. First, syntax: is it shaped like a real address? Next, the domain: does it exist, and does it have mail servers? Then the mailbox: the verifier asks the mail server if it would accept the address, without sending an email.

Some domains accept every address, so a yes proves nothing. That's a catch-all, and it gets its own result instead of counting as valid. Each address ends as valid, invalid, role, disposable, or unknown.

Run it on a list before a campaign, or in a signup form to stop bad addresses at the door.

Video transcript

Email verification tells you whether an address can receive mail, before you send to it. A bad address doesn't only waste one email. It bounces. Too many bounces, and mail providers stop trusting you. Then your good emails land in spam too. Verification runs in layers. Each one answers a different question. First, syntax. Is this shaped like a real email address? Next, the domain. Does it exist, and does it have mail servers? Then the mailbox. The verifier connects to the mail server and asks if it would accept this address, without sending an email. Some domains accept every address, so a yes proves nothing. That's a catch-all, and it gets its own result instead of counting as valid. So each address ends with a status. Valid is safe to send. Invalid should go. Role is a shared inbox. Disposable is a throwaway. Unknown means no clear answer. Run it on a list before a campaign, or in a signup form to stop bad addresses at the door. 20 free credits every day you use your account, up to 600 a month. No credit card required. Start at billionverify.com.

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