Grow the list without poisoning it.
Grow subscribers without poisoning newsletter deliverability.
No card · 100 free · GDPR
AI — Fake signups inflate the count but kill the open rate. Strip them now and this issue lands where it should.
Stop the bad addresses at the source.
Your newsletter is the business, and the list never stops changing — signups pour in, addresses go stale, and one bad batch can land your whole send in spam. Scale the wrong way and you grow your list while shrinking the number of people who ever see it.
- Here's the fix. Verify subscribers at signup and clean the list before each issue so growth never comes at the cost of deliverability. EmailListChecker grades the list A–F, names the risky segments, and integrates with your ESP — so you can scale subscribers and keep landing in the inbox, issue after issue.
Outcomes, not just a status column.
The point isn't a green checkmark — it's what changes for your team when the data is finally trustworthy.
Verify newsletter signups so fake and mistyped emails never join the list
Clean before each issue to keep opens high and spam complaints low
Grow subscriber count without tanking inbox placement
Native sync with Mailchimp, Klaviyo, SendGrid and HubSpot
Everything media & publishing needs.
The specific tools this job calls for — all in one verifier, all talking to the same AI.
Subscriber list cleaning
Strip dead and trap addresses to protect newsletter deliverability.
Signup-form validation
Keep fake and mistyped sign-ups out of the list in real time.
Deliverability monitoring
Grade list health before each send so opens and inbox placement stay high.
Built to pass procurement.
The controls, scale and support that security, legal and engineering teams require — without the enterprise-software tax.
Security & compliance
SOC 2 Type II, GDPR and a signed DPA. Encryption in transit and at rest, deletion on request, and lists that are never sold or shared.
99.9% uptime SLA
A written availability SLA, redundant infrastructure and public status — a verification API the rest of your stack can depend on.
Dedicated support
Priority support, guided onboarding and a named success contact who helps you interpret results and tune your verification strategy.
Scale & throughput
Millions of addresses per job, real-time and batch on one API, with SDKs, webhooks, dedup and volume pricing that improves as you grow.
Governance & access
Team seats with role-based access and an audit trail, plus SSO / SAML for centrally-managed enterprise accounts.
Commercial that fits
Credits that never expire, custom contracts, invoicing, MSAs and security reviews — built for procurement, not a credit-card wall.
Good to know.
Ready for data you can trust?
Start with 100 free verifications — no credit card. See exactly what clean looks like for your list before you spend a cent.