Topic cluster

Operational mechanics — funnel, attribution, calendar

Takes on the operational layer: what the funnel really looks like when WhatsApp is the primary channel, how attribution works (and doesn't), and where calendar discipline breaks down. Stub — articles in progress.

Cluster stub — articles in progress

Articles in this cluster

• Physical SIM, eSIM, or virtual number — which one actually works for WhatsApp Business?

  Every WhatsApp Business number needs to receive one SMS to get verified. Most travel eSIMs can't. Most "virtual numbers" from CRMs and dialers can't either. Here's how to pick a number that actually passes.

  By Cyril Zakirov · August 13, 2026