Verify Entire Email Lists in Minutes
Upload a CSV with any size list. VeriMails processes every address in parallel using live SMTP verification — then delivers a clean, downloadable results file.
Built for high-volume list cleaning
Whether you have 1,000 or 1,000,000 addresses — bulk verification handles it.
CSV Upload
Upload any CSV with an email column. Map your columns once, and we handle the rest — no reformatting required.
Parallel Processing
Your list is split across multiple verification workers simultaneously. No waiting in line behind other users.
Real-time Progress Tracking
Watch verification progress as it happens. Row counts, status breakdowns, and estimated completion time — all live.
Downloadable Results
When complete, download your results as CSV with new columns added: status, score, disposable, and catch-all flag.
SMTP Verification
Every address is checked against the mail server directly. No pattern-guessing — actual SMTP handshake per address.
$19 per 10,000 Credits
Simple pay-as-you-go pricing. 100 free credits to start. Credits never expire. No subscriptions or minimums.
How it works
Get started in minutes. No complex setup required.
Upload your CSV
Drag and drop your file or click to upload. Map the email column in one click. Files up to 5 million rows are supported.
We process in parallel
VeriMails splits your list across multiple workers and begins SMTP verification immediately. Most lists complete within minutes.
Download clean results
Once complete, download the enriched CSV. Filter by status in your spreadsheet tool and start sending to valid addresses only.
We verify 500K+ emails per month. VeriMails API is fast, reliable, and the pricing is unbeatable. The catch-all probability scoring is genuinely unique.Sarah M. — Email Operations Lead at Digital Marketing Agency, United Kingdom