Email Verification That Keeps Bad Addresses Out Of Your Campaigns.

Each address goes through 7 checks: address format, mail server, disposable domains, role addresses, typo suggestions, free-mail flag and mail host. A domain that publishes no mail server, or declares that it accepts no mail, makes the address invalid. A domain with no MX record but a working address record is still treated as able to receive mail, as the email standards require.

No. Verifying an address never sends a message to it, so the person is not contacted and nothing appears in their inbox. The checks read public DNS records and published domain lists, which is why verification can run on a whole list before your first campaign without touching your sending reputation.

Valid means the domain accepts mail and nothing flagged the address. Risky means the address might work but should not be trusted blindly: a role inbox such as info@, a likely typo of a major mail domain, or a domain whose lookup failed. Invalid means the address should not be mailed: it is malformed, uses a throwaway disposable domain, or its domain has no mail server. Free-mail addresses are flagged for you without changing the verdict.

They are held out of every campaign automatically. A held contact is left out of each audience, and any message already queued to it is cancelled before it sends. You can opt risky contacts back in for a single campaign on its Audience tab; invalid contacts can be opted in only with an explicit acknowledgement that they will likely bounce.

Upload the CSV under Deliverability, then Email Verification, confirm which column holds the addresses, and start. Duplicate addresses are skipped, progress shows as the file is checked, and you can download all results or only the valid, risky or invalid rows, with your original columns kept. Uploaded files are not added to your contacts and are deleted after 30 days.

Yes. Every CSV import, every contact added in the app and every contact created through the API is verified as it arrives, and its verdict is written onto the contact. Before a campaign launches, the Review and launch screen counts any recipients not yet verified and lets you verify them in one click.

AI never decides whether an address is valid; the checks do. When you ask, AI summarises a finished run in plain English with next steps, proposes fixes for addresses on dead domains and keeps a fix only when the corrected domain has a mail server in DNS, and suggests which column of a messy CSV holds the email addresses for you to confirm.

Yes. With a workspace API key you can verify a single address, start a verification of contacts, a list, a segment, a campaign audience or uploaded rows, follow its progress, page through results filtered by verdict, and download them as CSV. Contacts created through the API are verified automatically, the same as contacts added in the app.

Yes. Email verification is included on every plan, including the free trial. You can verify single addresses, contacts, lists, segments and uploaded files from the first day, and every import and new contact is verified automatically without any setup on your side.