Messenger Day by Facebook - Share your day in Messenger
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
WhatsApp Status - An encrypted Snapchat Stories clone
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Plivo - Plivo simplifies your customer engagement.