Claim & start

Unlike others, you won't be charged for unknown results.

We spot catch-all mailboxes where others fail.

Use API, upload CSV or one-shot verification.
We trim spaces, convert domains to lowercase and punycode, and reject malformed addresses, like missing @ symbols or invalid TLDs and other frequent mistakes.
Our system compares domains against popular providers (like gmail.com and outlook.com) to spot and fix subtle errors.
We block throwaway emails
We check addresses against an always-updated disposable email list and flag suspicious domains, like newly registered or “temp mail” providers.
Our system looks up mail server (MX) records and tests connections to ensure the domain can accept messages.
We identify domains that accept any email address (even fake ones), so you can avoid risky sends and hard bounces.
We trim spaces, convert domains to lowercase and punycode, and reject malformed addresses, like missing @ symbols or invalid TLDs and other frequent mistakes.
Our system compares domains against popular providers (like gmail.com and outlook.com) to spot and fix subtle errors.
We block throwaway emails
We check addresses against an always-updated disposable email list and flag suspicious domains, like newly registered or “temp mail” providers.
Our system looks up mail server (MX) records and tests connections to ensure the domain can accept messages.
We identify domains that accept any email address (even fake ones), so you can avoid risky sends and hard bounces.
4.5
1000 free monthly validations
Successful verifications
Successful verifications
Successful verifications
Successful verifications
Successful verifications
Delivery Optimizer helps you improve inbox placement by establishing a stable and consistent sending setup. You’ll configure key sending parameters so your email activity aligns with common inbox provider expectations and avoids unnecessary delivery issues.
Check the most Frequently Asked Questions
What hard bounce rate triggers deliverability problems with Google and Microsoft?
How often should a B2B sales team clean its email list?
Why do standard email verification tools fail on enterprise domains?
What is the most effective B2B email verification technique?
Does a high bounce rate ruin a new email domain?
How many emails should I send per day when warming up?
How long does it take to warm up an email domain?
Where do I install these records?