Quickley is offered with two subscription plans—a “free forever” plan at $0/mo and a premium plan called “Inbox Plus” at $19/mo. In order to use WhatsApp Business API, you need to choose the “Inbox Plus” plan. After activation, it will charge your credit card monthly until cancelled. This plan includes one user. Should you want to add seats for your team members, they are billed at $19/mo each additionally.