Bulk WhatsApp checker
WhatsApp number verification for your customer lists
Before you pay for WhatsApp Business conversations or blast order updates, find out which numbers are actually registered on WhatsApp. Upload your list, get back a clean file, and stop spending on messages that can never be delivered.
Why WhatsApp deliverability decides your margins
WhatsApp is the checkout channel
In Brazil, over 90% of adults use WhatsApp daily; in Indonesia it reaches a similar share. For COD sellers, the confirmation call or message on WhatsApp is what turns an order into revenue — if the number isn't on WhatsApp, that order is already at risk.
Dead numbers inflate your costs
Every WhatsApp Business conversation you open on a dead number is money spent for zero return. Filtering inactive numbers before a campaign typically removes 5–20% of a raw customer list, depending on list age and source.
Cleaner lists, better sender reputation
High failure rates hurt your WhatsApp Business quality rating and can trigger template restrictions. Verifying numbers first keeps your delivery rates high and your account in good standing.
How bulk WhatsApp verification works
01
Upload your CSV
Drop in a file with your customer numbers — 2,000 to 2,000,000 rows.
02
We check each number
Every number is checked for WhatsApp registration status.
03
Track progress live
Watch the task move through the queue in your dashboard.
04
Download results
Get the same file back with a verification_status column appended.
Built for COD confirmation workflows
Cash-on-delivery lives or dies on contactability. If the buyer can't be reached to confirm the order, the parcel ships anyway — and comes back. COD return rates of 20–40% are common in Southeast Asia and Latin America, and unreachable numbers are one of the biggest controllable drivers.
Running your order list through WhatsApp verification before the confirmation step lets your team focus on buyers who can actually be reached — and flag the rest for a second attempt or a different channel.
Read: how COD sellers cut returns with phone verification →At a glance
- Price per check
- $0.002
- Minimum batch
- 2,000 numbers
- Maximum batch
- 2,000,000 numbers
- Free trial
- 1,000 verifications
Frequently asked questions
- How does bulk WhatsApp number verification work?
- You upload a CSV or Excel file with your customer phone numbers. TrueReach checks each number against WhatsApp's registration status and returns the same file with a verification status column appended — active, inactive, or unknown. You only message the numbers that can actually receive WhatsApp messages.
- Is this suitable for my own customer list?
- Yes — TrueReach is built specifically for businesses verifying their own first-party customer data, such as numbers collected at checkout. Every account is reviewed manually, and using the service for unsolicited outreach to third parties is prohibited under our Terms of Service.
- How many numbers can I verify at once?
- Bulk WhatsApp verification runs from 2,000 up to 2,000,000 numbers per task. For smaller, real-time checks, use our phone verification API at $0.0025 per lookup.
- How much does WhatsApp number verification cost?
- Bulk WhatsApp checks cost $0.002 per number. Every new account receives 4,000 free credits after review — enough for 1,000 free verifications. Paid credit packs start at $50.
- Which countries does it work for?
- WhatsApp verification works globally, with the strongest demand in markets where WhatsApp is the default commerce channel — Brazil, Indonesia, Mexico, Colombia, and the Middle East.
Stop paying for undeliverable WhatsApp messages
Upload your customer list and find out which numbers are really on WhatsApp. Your first 1,000 checks are free.
No credit card required · Manual review, usually within hours