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
How do I check my email deliverability?
How does list quality affect email deliverability?
What is the difference between email delivery and email deliverability?
What is a good email deliverability rate?
What is email deliverability?
How often should I verify my email list?
What happens if an email address passes verification but still bounces?
Does an MX record lookup confirm that a specific mailbox exists?