Land in the inbox, not the spam folder.
Make your newsletters land in the inbox, not the spam folder.
No card · 100 free · GDPR
AI — Suppress the dead inbox before this blast — it's dragging the segment's grade down. Everything else is safe to send.
Stop the bad addresses at the source.
Your subscriber list decays about 22% a year. Send to it as-is and bounces climb, opens fall, and providers start routing your beautifully designed campaign straight to spam — dragging down every send that follows.
- Here's the fix. EmailListChecker cleans your campaign list before each blast and grades its deliverability A–F, showing exactly which segments are dragging you down. Verify in bulk, push the clean list back to your ESP, and even test inbox placement across Gmail, Outlook and Yahoo before you hit send.
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.
Lift open and click rates by mailing only engaged, reachable subscribers
Protect domain reputation so your next campaign lands in the inbox too
Get an A–F deliverability grade with the exact risky segments named
Push a clean list straight back to Mailchimp, HubSpot or Klaviyo
Everything marketing campaigns needs.
The specific tools this job calls for — all in one verifier, all talking to the same AI.
Pre-send list cleaning
Bulk-verify before every broadcast and export only the deliverable addresses.
A–F deliverability grade
A health score for each list with the exact segments dragging it down.
ESP write-back
Push clean lists straight back to Mailchimp, HubSpot, Klaviyo and SendGrid.
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.