Clean Lists. Better Deliverability. Higher ROI.

Marketing teams that verify before sending see fewer bounces, stronger sender reputation, and higher open rates. Set up VeriMails in under 5 minutes and protect every campaign.

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Built for email marketing teams

Protect your sender reputation and maximize deliverability across every campaign and automation.

Sender Reputation Protection

High bounce rates trigger spam filters and damage domain reputation. Verify your lists before every send to keep deliverability high and avoid ESP suspensions.

Improve Open & Click Rates

Clean lists mean your emails reach real inboxes. Remove dead addresses and watch engagement metrics climb as you send only to people who can actually receive your messages.

Spam Trap Detection

Hitting even one spam trap can blacklist your domain. VeriMails identifies known traps, honeypots, and risky addresses so you never send to them by accident.

Bulk List Cleaning

Upload your entire subscriber list as a CSV. Get results in minutes with a clear breakdown of valid, invalid, risky, and catch-all addresses ready for segmentation.

ESP & Platform Integrations

Connect VeriMails to Mailchimp, HubSpot, ActiveCampaign, and more via Zapier or our REST API. Verify subscribers automatically as they enter your funnel.

Real-Time Signup Verification

Catch typos and fake addresses at the point of signup. Verify emails in real-time via API so only valid subscribers enter your list from day one.

How it works

Clean your marketing lists in three simple steps.

Export your subscriber list

Export a CSV from Mailchimp, HubSpot, Klaviyo, or any email platform. Any format with an email column works.

Upload and verify

Drag and drop your file into VeriMails. We check every address against 20+ validation signals and return results in minutes.

Import your clean list

Download your verified list, remove invalids and risky addresses, and import back into your ESP. Send with confidence.

99.2%

Accuracy Rate

Sub-2s

Response Time

19B+

Emails Verified

10,000+

Active Users

Our Mailchimp bounce rate dropped from 6.2% to 0.4% after the first list cleaning. We now verify quarterly and our sender score has never been higher.

Rachel K. — Email Marketing Manager, DTC Fashion Brand

Frequently asked questions

Common questions from marketing teams.

Best practice is to verify your full list at least once per quarter, and verify new subscribers in real-time as they sign up. Lists degrade by 2-3% per month as people change jobs, abandon inboxes, and domains expire.

Yes. By removing invalid and risky addresses before sending, you reduce bounces, protect your sender reputation, and improve inbox placement. Most marketing teams see 15-30% improvement in open rates after their first list cleaning.

VeriMails integrates with Mailchimp, HubSpot, ActiveCampaign, and dozens of other platforms via Zapier. You can also use the REST API to build custom integrations or verify in real-time at the point of signup.

A catch-all domain accepts email sent to any address, making it impossible to tell if a specific mailbox exists using standard verification. VeriMails uses proprietary catch-all scoring to give you a probability estimate, so you can make informed decisions about these addresses.

VeriMails identifies invalid addresses, spam traps, disposable emails, and role-based addresses before you send. Removing these keeps your bounce rate under 2% — the threshold most ESPs use to flag or suspend accounts.

Start cleaning your lists today

100 free credits. No credit card required.

Get started for free