Is it necessary to detect empty numbers before placing global numbers? Pitfalls I’ve stepped into in India and the United States
In the process of global marketing, I once had a "high-potential resource" containing 100,000+ mobile phone numbers, covering the two mainstream markets of the United States and India. At that time, I was full of confidence and prepared to use WhatsApp mass messaging and SMS delivery to quickly increase the ROI. Unexpectedly, these numbers directly caused me to step into a big pit: account ban, low conversion, complaints, and wasted budget, all came.