Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Plivo - Plivo simplifies your customer engagement.
SendPulse - Maximizing e-mail marketing open rates automatically