Reach the Inbox.
Not the Spam Folder.
Validate email addresses in real-time, eliminate hard bounces, and protect your domain reputation with our deep SMTP verification engine.
Clean 100,000+ Contacts in Minutes
Eliminate manual list hygiene. Drag and drop your CSV or TXT lead lists directly into Emails Verification. Our high-concurrency engine automatically validates RFC syntax, queries authoritative DNS/MX records, pings mail servers, and deduplicates records with sub-second efficiency.
| Email Address | Syntax | MX Check | Status |
|---|---|---|---|
| sarah.jenkins@acmecorp.io | ✓ Valid | ✓ Google MX | Deliverable |
| contact@throwaway-box.net | ✓ Valid | ✕ Disposable | Blocked |
| j.smith@venturecap.com | ✓ Valid | ✓ Outlook 365 | Deliverable |
| dev-test@@broken-domain | ✕ Syntax Err | — None | Invalid |
| leads@catchall-hq.org | ✓ Valid | ⚠ Wildcard | Risky |
{
"status": "valid",
"deliverable": true,
"score": 98,
"email": "cto@company.com",
"domain": "company.com",
"smtp_check": true,
"disposable": false,
"catch_all": false,
"execution_time_ms": 112
}Developer-First REST API
Stop bad data right at your signup form or checkout flow. Our low-latency REST API integrates into any stack with sub-150ms response times, 99.99% SLA uptime, comprehensive webhooks, and predictable payload structures.
Engineered for Complete Deliverability Control
Three deep layers of enterprise protection to safeguard your sender score and inbox placement.
Deep SMTP Pinging
Confirm inboxes exist in real-time without ever sending an actual email. Ping mail exchangers directly via RFC-compliant SMTP handshakes with zero footprint left behind.
Catch-All Detection
Detect risky wildcard mail servers that accept every incoming address regardless of whether the specific mailbox exists, protecting your sender score from hidden bounces.
Disposable Shield
Instantly detect and block temporary, 10-minute, and burner mailboxes from spam lists and fraudulent signups using our database of 100,000+ known disposable domains.