Zalo's Number Filtering Strategy in Vietnam

I went through a lot of detours because I neglected WhatsApp number filtering: from incorrect number formats to inefficient manual verification, until I discovered the ITG global filtering tool, which truly unlocked the secret to efficient number filtering.

In the digital marketing wave of 2025, WhatsApp filtering became an essential lesson I couldn't avoid. With over 2 billion WhatsApp users worldwide, accurate WhatsApp filtering directly determined the effectiveness of my promotions.Initially, I thought it was just a simple task of filtering phone numbers, but I ended up taking a lot of detours.

From blind optimism based on "format" to the inefficient and torturous process of manually dialing, and then to discovering the power of ITG's global filtering tool, I finally figured out an efficient method for filtering WhatsApp numbers.This article will share my experience and guide you through the latest WhatsApp number filtering strategy for 2025, with the core tool being ITG full-domain filtering.When I first started screening WhatsApp numbers, I naively thought that as long as the number format "looked right," it was a good number.

This made me realize that the first step in WhatsApp's number screening process is not format calibration, but rather having a scientific verification system.Manual verification is suitable for small-scale testing, but when faced with a database of 100,000+ phone numbers, it's simply asking for trouble.

This tool has completely changed the way I work, not only boosting my efficiency but also making the screening results incredibly accurate.

With over 3 billion WhatsApp users, accurate WhatsApp number filtering is not only key to improving conversion rates, but also an essential means to avoid wasting resources and compliance risks.Power-on and online screening provide real-time insights into user online status, providing accurate data support for advertising and social media operations.

The system combines profile picture and nickname filtering to efficiently target potential users, making social media operations and advertising more controllable.The cloud control platform offers customized modes to meet diverse business needs, enabling marketing teams to quickly execute multi-platform promotion tasks.

The batch removal of unused and low-activity accounts ensures clear and reliable promotion data, improving ad reach and conversion rates. The system screens highly active users based on interaction frequency, increasing community engagement and optimizing advertising effectiveness.Unified multi-platform account management enables efficient operation of accounts across Telegram, WhatsApp, LinkedIn, and Facebook.