Bulk list filtering
Import a large file and split it into contacts that are reachable on WhatsApp and contacts that are not.
A Windows application that filters contact lists into active and inactive WhatsApp segments — processed locally on your own machine, with one licence covering unlimited checks.
Checker, filter and validator are three words people use for the same core job. This is that job, on your own machine.
Import a large file and split it into contacts that are reachable on WhatsApp and contacts that are not.
Connect up to 10 slots and let them share the workload, which keeps long runs more stable than a single session.
Every job produces an active file for the campaign and an inactive file to keep as a suppression list.
The most common cause of a filter tool suddenly breaking, handled automatically.
Licence checks that survive restarts instead of locking you out mid-job.
Your contact files never leave your computer — nothing is uploaded anywhere.
We build both this and the cloud service, so we have no reason to push you at the wrong one.
You are on Windows, you want files processed locally and never uploaded, and you prefer one licence with unlimited checks over per-check pricing.
You cannot risk a WhatsApp restriction, you are on macOS or Linux, your lists span many countries, or you need an API. No account is used at all.
The limitation worth knowing: this software works through a logged-in WhatsApp session, so heavy use can get that account restricted. Multi-account setups and longer intervals reduce it; they do not remove it. If that is a dealbreaker, take the no-login route.
Log in one account at a time and wait for each to reach Ready before adding the next.
One number per line in full international format. Prepare it properly and everything downstream improves.
Let the slots share the work, then save the active and inactive files for campaign and suppression use.
In everyday use people mean the same workflow by all three, but there is a useful distinction:
This software does all three. If your interest is specifically the data-hygiene side, the validator page covers that workflow in detail.
Full setup steps are in the download and setup guide.
Licences start at $15 and scale with slot count and term. Tell us your volume and we will recommend the smallest one that covers it rather than the largest.
Verified legitimate buyers can request a refund within 7 days if support cannot make the software work as promised. Misuse, policy violations and fraud are excluded. Full conditions are in our terms.
This is a data-cleaning utility for lawful marketing and legitimate business use.
You are responsible for having a lawful basis to hold and process the numbers you check, for complying with applicable data-protection law, and for following Meta and WhatsApp platform policies. Cleaning a list does not create permission to contact anyone on it.
Software that validates a contact list and separates numbers that are active on WhatsApp from those that are not, so you can work from a cleaner segment.
Yes. V16 Pro supports up to 10 slots, which gives higher throughput and better session stability on long runs.
No, it is a Windows application. On macOS or Linux use cloud checking, which runs in any browser.
Verified legitimate buyers get a 7-day money-back guarantee if support cannot make the software work as promised.
Download the free v15.2 build straight away, or apply for V16 Pro if you need the multi-account workflow.
The focused active/inactive lookup workflow.
Batching strategy for very large lists.
Normalise, verify and segment for CRM-grade hygiene.
No account, no QR scan, no ban risk.
Install, activate and run your first job.
Configure 2–10 slots for stable long runs.