Help Centre

SMS Voice Email Fax Developers Installation Admin Dashboard

Platform Throughput and Message Processing Speed

Learn TNZs message throughput limits for SMS, Email, Voice and Fax with per-hour figures, broadcast planning examples, and answers to common capacity questions.

Data Sovereignty for New Zealand & Australian Messaging

TNZ keeps your SMS, Email, Voice and Fax data in New Zealand and Australia. Enterprise plans support single-jurisdiction processing. A guide for compliance teams.

Understanding TNZ Accounts, SubAccounts, Departments and Users

Learn how to organise your TNZ account using SubAccounts and Departments for better data segregation, multi-tenant billing, and user management.

How TNZ Pricing Works (Billing and Costs)

Learn how TNZs usage-based pricing works. Explore billing units, cost factors, postpaid invoicing, and real-world examples for SMS, Email, and Voice.

TNZ Dashboard MFA Management Guide

Learn how to secure your TNZ account using Multi-Factor Authentication (MFA), enforce site-wide security, and manage user settings.

Change My Billing Preference

Adjusting your payment method

Linking Existing Accounts

Merging or linking accounts

Change My Invoice Email Address

Update the email address that receives invoices

Paying TNZ Group

Bank Account details, Direct Debit and Credit Card payment options

Update My Credit Card Details

Change the credit card used for payments

Invoicing Preferences & Cost Centres

An explanation of invoice itemisation options for enterprises

Company Details

Official TNZ Group Limited company details, including GST/IRD numbers, postal address, and banking instructions for New Zealand and Australian clients.