Three kinds of software
Desktop, plug-in or cloud: what Surat traders are being offered
On a listing page they look similar. Once a Surat business sends daily at volume, they behave very differently.
1 Desktop sender programs
Installed on one office PC and steering WhatsApp Web on a personal SIM. Cheap and quick to start, but daily bulk sending this way is a pattern WhatsApp detects and shuts down.
2 Chrome extensions
A browser add-on working WhatsApp Web for one user. The laptop must stay awake and online, only one person can use it at a time, and the number faces the same block risk.
3 Official cloud platforms
Hosted software with a direct line to Meta's platform. No installation, no machine left running, a login for each staff member on one verified number, and scheduled sends that run regardless. WappBlaster is built this way.