WhatsApp FAQ The client is active if he sent you a message in this calendar month or you sent them; The number of received or sent messages is not counted in the tariff; The number of your operators is not counted in the tariff; The total number of subscribers per number is not taken into account in the tariff, only active in a calendar month; Plans 100 & 1000 are added up, you can use, e.g., a tariff for 2300 users; All prices are fully indicated on the site, there are no additional payments on Facebook or WhatsApp.