NUMSIFT INSIGHTS

Articles & Data Insights

Practical guides on global number validation, social-platform screening and data quality for international workflows.

Facebook and WhatsApp Lead Screening: A Careful Workflow for Better Follow-Up

Facebook and WhatsApp Lead Screening: A Careful Workflow for Better Follow-Up

Facebook lead lists can be cleaned and checked for WhatsApp-related number status before outreach. These checks may help teams identify records that need review, but they do not verify a person’s identity, consent, or purchase intent—and cannot guarantee better ad conversion. Learn how to prepare data, interpret unknown results, review records, and handle privacy responsibly.

Read Article →
Screening Zalo-Related Phone Lists in Vietnam: A Practical, Privacy-Aware Guide

Screening Zalo-Related Phone Lists in Vietnam: A Practical, Privacy-Aware Guide

Phone-list screening can help teams standardize Vietnamese numbers and flag records that may need review. It cannot establish a person’s age, gender, purchasing intent, or Zalo account status. This guide explains how to prepare data, interpret uncertain results, verify audience assumptions responsibly, and contact people only when there is an appropriate basis to do so.

Read Article →