Deliverability & Anti-Ban

Check which numbers are on WhatsApp before you blast.

Blasting to dead numbers is the fastest way to get flagged as spam. Filter Number validates your list first, so you only message real, active WhatsApp users — protecting your number and your delivery rate.

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Filter Number
Why it matters

Clean lists, healthy numbers

Protect your number from bans

A high bounce rate is the number-one spam signal. By removing invalid numbers first, you keep your sender reputation clean — campaign after campaign.

Only message real users

Upload a list of any size and get back exactly which numbers are active on WhatsApp. No more wasted sends to disconnected numbers.

Lift your delivery rate

Clean lists deliver. Customers watch delivery climb toward 99% once dead numbers are filtered out.

Built into every campaign

Filtering runs as the first step before any blast, so your team can't accidentally send to an unverified list.

How it works

Clean your list in three steps

  1. 1

    Upload your numbers

    Paste or import a CSV of phone numbers in any common format.

  2. 2

    We check WhatsApp

    JomChat verifies each number against WhatsApp and flags actives, invalids and duplicates.

  3. 3

    Export the clean list

    Send only to verified numbers — straight into a campaign or your pipeline.

By the numbers
99.4%Average delivery on filtered lists
1–7 daysHow fast unfiltered numbers get banned
0Wasted sends to dead numbers

Frequently asked questions

Quick answers — also marked up as FAQ schema for rich results in search.

It checks each number's WhatsApp registration status and reports whether it's active or invalid, so you only message real users.
No — done responsibly, validation reduces ban risk. JomChat paces checks and never floods WhatsApp with lookups.
Malaysian (+60) and international numbers in CSV or pasted text. We normalise formats automatically.
No — it's one layer of anti-ban protection. Pair it with Number Warming and smart send delays for full safety.
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