Nexmo is a cloud-based communications platform that allows businesses to easily integrate voice, messages, and conversations into their applications. It enables developers to quickly and easily build applications that use voice, messaging, and conversation services such as SMS, voice calls, and group messaging. With Nexmo, businesses can leverage the power of cloud communications to improve customer engagement and create immersive customer experiences. Through its platform, businesses can connect with customers on any device, across any channel, and in any language. Nexmo also provides insights into customer interactions and helps to tailor the customer experience. It enables businesses to deliver a seamless customer experience with personalized communication and engagement.
They have the best features to promote a business and one of the ones I like the most are the SMS attachments, where you can send images, brochures and much more.
Discontinued It was acquired and withdrawn from the market in 2014.
Textlocal also provides very good SMS API and voice solutions.