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How to Do Telegram Number Detection: List Preparation Order, Available Fields, and Privacy Limits
This article explains how to perform Telegram number detection on an existing phone number list: first normalize to E.164 format and deduplicate, then select detection items to submit; it explains what "not found" and the four activity levels each mean; and finally describes result write-back methods via console upload, API, and Webhook.
How to Integrate a Telegram Number Screening API: List Cleaning, Asynchronous Submission, Result Fields, and CRM Write-Back
A step-by-step guide to integrating a Telegram number screening API: clean phone numbers to E.164, submit in batches by country, receive results via Webhook, and write back to CRM by valid and invalid groups.
How to Integrate WhatsApp Batch Verification API: From List Cleaning and Async Submission to CRM Write-back
Using a multinational customer list as an example, this article explains in order how to batch verify WhatsApp activation and account status via API, covering E.164 normalization and deduplication, country-based batching, selecting detection layers, asynchronous task submission and Webhook reception, result field boundaries, and how to handle one-number-to-multiple-records and null overwrites when writing back to CRM.
How to Choose a WhatsApp Number Screening Tool: Check by List Format, Detection Fields, Delivery Method, and Billing
When choosing a WhatsApp number screening tool for a multi-country contact list, evaluate five questions: whether it handles number formats by country rules, whether detection fields match later decisions and privacy boundaries are clear, whether delivery is web export or API with Webhook, whether billing and data handling are transparent, and finally verify results with a small sample.
Where Is WhatsApp Number Screening Slow? Field Depth, Submission Method, and List Cleaning Speed-Up Order
A slow batch is usually caused by too many detection fields, synchronous submission, dirty lists, and API rate limits. This article explains how to locate the bottleneck and optimize in the right order.
