About 30% of emails go stale every year. We check each address for valid syntax, a real domain with working mail servers, disposable or role accounts, and known spam traps, then score it from 0 to 100 so you know what's safe to send. Need mailbox-level SMTP checks that confirm each individual inbox? Those come with our Professional and Enterprise plans. You can run up to 1M addresses at a time.
Extract emails from any text instantly. Free, unlimited, no signup required.
100% FreeCheck deliverability, spam traps, disposable and role accounts, and get a quality score for every address.
1,000 Free/DayPaste emails or upload a file to validate them instantly
or click to browse
CSV or TXT up to 50MBWhen over 10% of your list contains invalid addresses, less than 44% of your emails get delivered. Bounces, spam traps, and invalid addresses damage your sender reputation.
Invalid mailboxes that never existed or were deleted
Honeypot addresses that flag you as a spammer
Disposable addresses that expire after use
Domains that accept any address but may not deliver
Every address runs through syntax, domain and MX, disposable and role detection, spam-trap and catch-all checks, and a quality score.
We confirm each domain is real and its mail servers accept mail, falling back to backup MX records if the first one doesn't answer. Dead domains and addresses with no mail server get filtered out before you send. Per-mailbox SMTP verification, which confirms the individual inbox exists, comes with Professional and Enterprise plans.
Identifies known spam traps and honeypot addresses before they damage your sender reputation.
AI-powered detection of fake, randomly generated, and keyboard-mash email addresses.
Filters 1000+ temporary email providers like Mailinator, Guerrilla Mail, and 10MinuteMail.
Identifies generic addresses like info@, support@, admin@ that often have lower engagement.
Detects domains that accept any email address but may not actually deliver to real mailboxes.
Every email gets a deliverability score based on all validation factors. High scores mean safe to send, low scores mean risky. Helps you make informed decisions about which emails to keep.
Suggests corrections for common domain typos like gmial.com, outlok.com, and more.
Detects duplicate emails with different formatting (dots, plus signs) for Gmail and other providers.
Paste emails directly or upload a CSV/TXT file with up to 1 million addresses.
We run more than 10 checks on each address in real time (syntax, domain and MX, disposable, role, spam-trap, gibberish) and score the result. Per-mailbox SMTP verification comes with Professional and Enterprise plans.
Export clean lists segmented by validity, risk level, or quality score.
Integrate email validation directly into your signup forms, CRM, or marketing automation. Simple JSON API with real-time response.
POST /api/validate
X-API-Key: lx_your_api_key
{
"email": "user@example.com"
}
// Response
{
"valid": true,
"status": "valid",
"qualityScore": 95,
"isDisposable": false,
"isRoleBased": false,
"verificationDepth": "domain" // "mailbox" on Pro/Enterprise
}More features, better accuracy, transparent pricing. No hidden fees or surprise charges.
Clean your lists before campaigns to improve deliverability and reduce bounce rates.
Validate emails at signup to prevent fake accounts and improve user quality.
Verify customer emails at checkout to ensure order confirmations are delivered.
Validate leads before adding to CRM to maintain data quality and save on CRM costs.
Start with 1,000 free validations per day. No credit card required.