How to Request a Higher TNZ Credit Limit
Find the TNZ credit limit extension form, check who must complete it, and learn what details you need to request a higher account limit.
READ ARTICLEUse the REST API directly or get started faster with a library for your preferred language and runtime.
Build messaging workflows for SMS, email, fax, voice and text-to-speech using TNZ’s JSON-over-HTTPS API. Authenticate with a JWT bearer access token and receive delivery updates through webhooks.
Use a supported package with language-specific examples and installation guidance.
Connect modern applications, desktop tools and established business systems.
Generate your access token, test your integration, then configure delivery updates and error handling.
Search setup guides, account instructions and practical answers for using TNZ services.
Find the TNZ credit limit extension form, check who must complete it, and learn what details you need to request a higher account limit.
READ ARTICLERequest a New Zealand short code, Australian Sender ID or other dedicated number through TNZ. Learn what details you need and how to complete the form.
READ ARTICLEConfiguring a Verified WhatsApp Business account so that your business name appears first on messages.
READ ARTICLEExplore TNZs Q3 2026 product updates, including REST API v3.00, the TNZ MCP Client, new integrations, Dashboard improvements and expanded SMS capabilities.
READ ARTICLEUpgrade to TNZ REST API v3.00 for simpler requests, expanded messaging APIs and workflow automation, plus connect AI tools with the TNZ MCP Client.
READ ARTICLENew Zealand businesses can now get a dedicated SMS short code from $89/month. Your own number, unlimited keywords, and customers can text you first.
READ ARTICLEForms for adjusting credit limits, ordering numbers, requesting direct debits, etc.
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