Stop messaging fake numbers
Check WhatsApp numbers in bulk
Upload your list as it is. VeriFlow removes duplicates, standardizes the format and shows which numbers have an active WhatsApp account.
No monthly fee · credits never expire
List uploaded
12,340
real numbers
Total savings
$218
in avoided waste
Illustrative example, not a measured result.
Companies that rely on real data rely on Veriflow.
Validate lists from 2 thousand to 20 million numbers, with credits that never expire.
You're spending money every day on leads that don't exist.
WhatsApp campaigns waste budget messaging fake, disconnected, or nonexistent numbers.
That creates invisible waste, account bans, and skewed results.
The problem isn't your product — it's your list.
And that's exactly where Veriflow™.
How it works
Upload your list
Drag and drop a .txt file or integrate via API.
We validate everything
We check every number and separate real contacts from invalid ones.
Get clean data
Download your optimized list and message only what's real.
Raw list
Validation
100% clean
Real results start with real data.
Every validated number is less waste and more profit for your business.
Save on every send
Cut useless sends and lower the cost per campaign.
Better deliverability
Boost delivery rates with clean, active lists.
Avoid bans
Protect your account and reputation by validating first.
Increase your ROI
Talk only to people who exist — and watch sales grow.
Behind a simple SaaS, global-grade engineering.
Bulk Validation
From 2,000 to 20 million numbers — cloud-based, built for maximum uptime.
Credits That Never Expire
Pay only for what you use. No expiration, no waste.
Total Security
Encryption and GDPR compliance — your data stays protected.
Unified API & Dashboard
Intuitive dashboard plus direct API integration.
Results as files
Download valid and invalid numbers as ready-to-use TXT files.
WhatsApp support
Reach us through the WhatsApp button on the site.
The real-marketing movement.
Veriflow isn't just a platform.
It's a new way to do marketing — built on truth and efficiency.
Join the companies that decided to talk only to people who are real.
What you get.
Pricing: pay only for the credits you use
No subscription, and credits never expire.
| Package | Leads | Bonus | Price | Cost per lead |
|---|---|---|---|---|
| Starter | 100,000 | — | $19 | $0.00019 |
| Pro | 250,000 | — | $39 | $0.00016 |
| Business Most popular | 500,000 | — | $69 | $0.00014 |
| Premium | 1,100,000 | +10% | $119 | $0.00011 |
| Enterprise | 3,600,000 | +20% | $299 | $0.00008 |
1 submitted line = 1 credit. Duplicates and badly formatted numbers are removed before validation, but the line still counts.
Frequently asked questions
What does VeriFlow do?
VeriFlow checks in bulk which numbers on your list have an active WhatsApp account. It first removes duplicates and invalid numbers and standardizes the format. You get two files: valid and invalid numbers.
How do I check if a number has WhatsApp?
Upload your list to VeriFlow and get back which numbers have an active WhatsApp account and which don't. It works as a bulk WhatsApp number checker, from 2,000 to 20 million contacts at a time.
Do credits expire?
No. Buy credits once and use them whenever you need.
What list sizes do you support?
Each validation accepts from 2,000 to 20 million numbers.
Do I need to format my list first?
No. Upload your list as it is, as a .txt file or through the API. VeriFlow standardizes the numbers before validating them.
Why validate WhatsApp numbers before a campaign?
You stop paying for messages to numbers that don't exist, lower the risk of your account being banned, and measure the campaign on real data.
Is my data secure?
Files are encrypted and handled in line with GDPR. Valid numbers stay available for download for 90 days.
Is there a WhatsApp number validation API, and how can I pay?
Yes. A REST API lets you plug validation into your CRM or system, with docs at veri-flow.app/en/docs. Payment is accepted in USDT, and credits are released once the payment is confirmed.
Ready to validate what's real?
Save time, money, and energy by messaging only real contacts.
Take the next step now.
Create your account and get started in under a minute.