NexCheck-筛号平台
How to Screen WhatsApp Numbers? 5 Pre-Contact Self-Checks and Handling Error 1013
This article details WhatsApp number screening from E.164 format normalization to batch registration status checks, plus how to handle errors 1013 and 131026 to lower failure rates and protect your account quality score.
WhatsApp CSV Number Screening: 6 File Preparation Points Before Upload
Learn the six key points for preparing WhatsApp CSV screening files, including E.164 number format, encoding, delimiters, column headers, primary keys, and batching, with a checklist and FAQs.
How to Clean Your WhatsApp Contact List: 5-Step Process and Limit Reverse Engineering
Learn a five-step workflow for cleaning WhatsApp contact lists before sending campaigns, including limit-based scale planning, format normalization, registration status detection, result categorization, and pilot testing, with insights on error code 131026 and quality rating.
How to Filter Invalid WhatsApp Numbers? Handle Three Categories Separately
Filtering invalid WhatsApp numbers requires splitting undeliverable numbers into three categories: carrier-side inactive, active but not registered, and registered but detection miss, each with different actions: delete, remove from queue, and re-check, avoiding a one-size-fits-all approach.
How to Normalize to E.164 Before International Number Screening? Rules for Rewriting 4 Types of Dirty Numbers
This article details the practical steps for E.164 normalization before international number screening, including rules for identifying and rewriting 4 types of dirty numbers, and why normalization must precede deduplication and platform checks.
