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Email verification

Stop sending great emails
to bad addresses.

Find invalid email addresses before they become bounces. Verify your prospects in Overloop, separate uncertain results and launch your campaign with cleaner contact data.

Valid, invalid or uncertain. Know before you send.

Illustrative portrait of a professional reading at her laptopBefore you send.
Check the address.
Email check · Valid

The address passed the available checks.

Review for your campaign
Illustrative workflow and fictional person. AI-generated portrait.

Catch invalid addressesKeep known bad emails out of campaigns.

Spot uncertain resultsSee which contacts need another check.

Reduce bounce riskClean up the list before you press send.

Protect the work behind your campaign

A bad address wastes
a good sales opportunity.

You researched the account, found the contact and wrote the pitch. An invalid address can undo that work. Check your data before launch, so avoidable bounces do not become part of your campaign.

  1. Verify the contacts you plan to reach.

    Find prospects in the B2B contact database or bring your own list. Check their email addresses before adding them to an outreach sequence.

  2. Separate valid from invalid.

    Use the result to decide who stays in your email audience. Remove invalid addresses and review uncertain or risky contacts separately.

  3. Keep a second route to the prospect.

    A bad email address does not have to end your approach. If you have the right profile, use LinkedIn within your multichannel sequence to reach the same prospect.

Make each result actionable

Clean your list.
Keep your campaign moving.

Give your team a clear decision for each address: include it, leave it out or investigate before sending.

Invalid address? Leave it out.

Catch failed verification results before they reach your send list. Spend your outreach effort on contacts you can actually try to reach.

Uncertain? Check before committing.

Catch-all domains and incomplete server responses need a separate decision. Keep those contacts apart from confirmed valid results.

Illustrative team sharing a conversation at a desk
Illustrative team. AI-generated image.

Part of your outbound workflow

Find the prospect.
Verify. Then reach out.

Find your audience, check email addresses and build the campaign in Overloop. Verification fits between prospecting and outreach, so the team can act on the results before the first message goes out. Explore our cold email software to see how verified contacts become personalized campaigns.

A few useful answers

Email verification
questions, answered.

What is email verification?

Email verification checks an address and returns signals that help you decide whether to include it in outreach. Those signals are not proof that a person will receive or read your email.

What should I do with an uncertain result?

Keep uncertain addresses separate from confirmed valid results and review them before sending. Some mail servers do not provide a definitive answer, so the check cannot confirm the address.

What is a catch-all domain?

A catch-all domain can accept messages addressed to names that do not correspond to individual mailboxes. That makes it harder to confirm that a particular person has a working inbox at the address.

Does a valid result guarantee delivery?

No. Verification may reduce bounce risk, but it does not guarantee inbox placement. Mailbox changes, sender reputation, authentication, volume and message content still affect delivery.

How does verification fit into a campaign?

Review verification results before starting your email sequence. Keep invalid addresses out of the send and make a separate decision about uncertain or risky results.

Does a verified address mean I can contact the person?

A verification result is not permission to contact someone. Campaign compliance depends on your audience, lawful basis and how you handle outreach and opt-outs.

Before the next campaign

Give your next campaign
a cleaner contact list.

Find invalid addresses before launch. Keep your effort focused on the prospects you want to reach.

Your next big customer is waiting...

Access a 450M+ B2B contact database with built-in email verification.