TNZ API Client

tnzapi is a Node.js library for interacting with the TNZ Group REST API, supporting SMS, email, fax, text-to-speech (TTS), and voice messaging. Current stable version is 2.4.2. The library provides a unified client with namespaced messaging services (SMS, Email, Fax, TTS, Voice) and supports both Promise and callback patterns. It has moderate release cadence and is focused on New Zealand telecom services. Key differentiator is its all-in-one API for multiple communication channels in one package.