Twilio - Brings voice and messaging to your web and mobile applications.
ChatBot - Easy to use chatbot platform for business
E-goi - Email Marketing companies, SMS Marketing, software email marketing.
Botmake - Super simple and clean chatbot creation tool
Swift SMS Gateway - SMS Gateway is your bridge between the Internet and the world of cell phone SMS text messaging.
Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.