Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
WATI - No-code chatbot builder for WhatsApp Business
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
WhatsApp Business - Communicate more efficiently with your customers
Plivo - Plivo simplifies your customer engagement.
AiSensy - Whatsapp Chatbot, CRM & Marketing