Here are the prices of extra services (plug-ins and WhatsApp messages and email messages).Whatsapp Plug-in (Used to send outbound whatsapp messages): 10$/monthEmail: 0,0008$ per mail sentWhatsapp message: please consult META pricing: https://business.whatsapp.com/products/platform-pricingSMS messages: please consult TWILIO pricing: https://www.twilio.com/en-us/sms/pricing/us