Whatsapp® is unofficcially used in schools or organizations, and even it causes problems and try to implement substitute tools, employees still use Whatsapp®.
Groupnote is really a breking-rule solution and becomes the Whatsapp® of any shool and organization. It is a very powerful B2B SaaS proposal that has already showed marketfit in 6 countries and it is currently launching its second funding round to expand internationally.