NexmoLiberator

Just a logo - since there's no GUI :-)

Inspiration

I use Nexmo a LOT, especially at work. Sometimes, we have nightly jobs that send reminders to our opt-in users. Because of the telecom SMS policies, from one sender Nexmo number, you can only send 1 SMS per second. I sought to solve that in the easiest way possible.

What it does

NexmoLiberator is a DROP-IN replacement for Nexmo's Send SMS API. Just change the domain and that's it! You can blast away at the Send API and NexmoLiberator takes care of waiting 1 second between messages. It will even track the waiting time between all sending numbers so that it will wait the least amount of time possible. This will speed up throughput if you use multiple numbers to blast.

How I built it

I built the same REST api as Nexmo but with the messages queued in a RabbitMQ queue that intelligently ensures 1 second between each SMS Send as needed per sending number. NexmoLiberator itself calls the Nexmo Send API at the right time.