Batch verification · 2,000 – 2,000,000 numbers
Bulk phone number verification that scales with your list
Upload a CSV of your customer phone numbers and get back a clean, verified file — dead numbers filtered out, WhatsApp and Telegram presence confirmed, activity tiers attached. Built for e-commerce teams cleaning lists of thousands to millions.
Four checks, one upload
Run any combination of verification types against the same file. Each number is billed once per check type you select.
Dead-number detection
$0.002 / numberFind disconnected, inactive, and unreachable numbers. The baseline clean-up every customer list needs before any outreach.
WhatsApp registration check
$0.002 / numberKnow which numbers are active on WhatsApp so your Business API spend only goes to reachable recipients.
Telegram registration check
$0.002 / numberVerify Telegram presence for notification and community workflows, in the same upload as everything else.
Activity tier
$0.003 / numberGo deeper with line-activity signals to prioritize your most engaged contacts for high-value campaigns.
From raw CSV to clean list in four steps
01
Upload
Drop in a CSV or Excel file. We auto-detect the phone column.
02
Choose checks
Pick dead-number, WhatsApp, Telegram, or activity verification.
03
Track live
Tasks run asynchronously — watch progress in your dashboard.
04
Download
Get the file back with verification_status appended per row.
Need it in your pipeline? The same verification engine is available as a real-time phone verification API for checkout and signup flows — $0.0025 per lookup.
Who uses bulk verification
COD sellers
Filter unreachable numbers before confirmation calls. Fewer failed deliveries, fewer returns eating your margin.
DTC & Shopify brands
Clean your SMS and WhatsApp marketing lists so every campaign reaches real, active recipients — and your sender reputation stays intact.
Agencies & ops teams
Verify client lists at scale with per-task exports your team can drop straight into their CRM or ad platform.
Frequently asked questions
- What is the minimum batch size?
- Bulk verification tasks start at 2,000 numbers and scale to 2,000,000 per task. If you need to check a handful of numbers in real time, use our phone verification API instead — $0.0025 per lookup, no minimum.
- What file formats are supported?
- CSV and Excel files. Upload the file, tell us which column holds the phone numbers (or let us detect it automatically), and download the same file with a verification_status column appended when the task completes.
- How long does a bulk verification take?
- It depends on batch size. A 10,000-number task typically completes within the hour; very large batches of several hundred thousand numbers can take longer. Progress is visible live in your dashboard, and tasks run asynchronously — no need to keep the page open.
- How much does bulk phone verification cost?
- Dead-number, WhatsApp, and Telegram checks cost $0.002 per number; the activity tier costs $0.003 per number. Every account starts with 4,000 free credits (≈1,000 free verifications) after review, and paid packs start at $50.
- Can I verify numbers from any country?
- Yes — verification works for phone numbers worldwide. Our e-commerce customers concentrate on Brazil, Indonesia, Mexico, Colombia, and the Middle East, where WhatsApp and COD are central to the buying journey.
- What happens to my data?
- Your uploaded lists are used only to run your verification tasks. Task data is automatically deleted 30 days after completion, and we never sell or share customer data.
Your list is dirtier than you think
Upload it and find out — the first 1,000 checks are free, and most teams find 5–20% of their numbers are dead.
No credit card required · Manual review, usually within hours