Help Centre

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Mobile Number Formatting for SMS

How to format destination mobile numbers when sending SMS messages

Custom SMS Landing Pages

Set up a customised SMS Landing Page, cloud hosted by TNZ, and use this landing page in your SMS messages

Telephone Number Formatting for Voice & Fax

How to format destination telephone numbers when sending Voice & Fax messages

Understanding SMS Short Codes

Learn how 3-6 digit SMS short codes work in New Zealand. Compare Standard and Free-to-Text codes and understand compliance.

Resolving the Account Suspended Login Error

Why Am I Seeing an Account Suspended Error?

Combatting SMS Fraud

Practical steps to help your business combat A2P SMS Fraud

Preventing Toll Fraud

Limiting Toll Fraud (API Spamming) with proactive blocking techniques

Supported Voice File Types

File formats for VoiceCast and Voicemail

Send A Fax Using The Dashboard

How to send a simple fax via the TNZ Dashboard

Receiving Faxes As PDF or TIF

Adjust your Internet Fax file type

How To Send Email-to-Voice Messages

A guide to sending Text-to-Speech Voice Messages via Email

Number Porting

Information and tips on number portability in New Zealand and Australia