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Email verification
How to tell whether an email address will work before you send to it, what verification results really mean, and how to keep a list clean.
Verification answers one question: will a message to this address be delivered? It checks the format, the domain, the mail server and, with a deeper service, the mailbox itself. It can't prove that a real person reads the inbox, and the guides below are honest about that. Start with what each result means.
Free tools for this
Checking one address
- For senders
Check if an email is valid
How to test whether an address is real without sending anything, and what each result means.
- For senders
Verify an email address free
Five free ways to check one address or a small list, what each check can and cannot tell you, and when to pay.
- Email help
Valid email characters and length
Which characters an email address may contain, maximum length, and whether hyphens, dots and plus signs are allowed.
- For senders
Spot disposable email addresses
How to tell a throwaway address from a real one, why it hurts your list, and how to keep them out.
Understanding results
- For senders
Email verification statuses explained
Valid, invalid, catch-all, unknown, disposable, role, spam trap: what each means and what to do.
- For senders
Soft bounce vs hard bounce
The difference, the error codes behind each, and exactly what to do with each type.
- For senders
Email bounce-back messages
What "Address not found" and "Delivery has failed" mean, how to read them, and how to fix the cause.
Cleaning a list
- For senders
How to clean an email list
A 7-step routine to remove bad, risky and inactive addresses before your next send.
- For senders
Email list hygiene best practices
The habits that keep a list healthy all year: double opt-in, sunset policies, and avoiding spam traps.
- For senders
B2B sales email verification
How sales teams verify prospect emails, handle catch-all company domains, and stay within the law.
Comparing services
- For senders
NeverBounce vs ZeroBounce vs Veml
Prices, free credits, result types and guarantees side by side, checked against each company's own pages.
- For senders
EmailHippo alternatives
What EmailHippo costs and offers, and when NeverBounce, MillionVerifier or Veml fits better.
- For senders
MillionVerifier alternatives
How MillionVerifier charges, its refund guarantee and its limits, plus other options.
Questions people ask
- Does "valid" mean a real person reads the email?
- No. It means the address is correct and can receive email. See the Trust center for what checks can and can't prove.
- Is Veml independent of EmailNa?
- No. Veml and EmailNa have the same owner, and comparison pages say so at the top.