What are some alternatives?
When comparing BulkSMS and Plivo, you can also consider the following products
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Twilio - Brings voice and messaging to your web and mobile applications.
Infobip - A2P messaging platform for enterprises, resellers & mobile operators with global network coverage.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Avochato - Text messaging for your business.
Bandwidth - Bandwidth offers SIP trunking, Emergency communications, and Voice & Messaging APIs.