SMS Guidelines for Australia

Stay compliant2 min readUpdated 2026-03-12

SMS Guidelines for Australia

Sending SMS to Australian numbers requires compliance with ACMA (Australian Communications and Media Authority) regulations.


Key Requirements

  • Express consent is required for marketing messages.
  • Inferred consent may apply for existing customer relationships (transactional messages).
  • Keep records of how and when consent was obtained.

Sender Identification

  • All commercial SMS must identify the sender (business name or phone number).
  • Include your business name in the message body if using a number the recipient won't recognize.

Quiet Hours

  • Do not send marketing messages on Sundays or public holidays.
  • Do not send before 9 AM or after 8 PM in the recipient's local time (Monday–Saturday).

Opt-Out

  • Every marketing message must include an opt-out mechanism.
  • Honor opt-out requests within 5 business days.
  • Maintain a suppression list of opted-out contacts.

Do Not Call Register

  • Check the Australian Do Not Call Register before sending marketing messages.
  • This applies to SMS as well as voice calls.

Number Types for Australia

TypeSMS SupportNotes
Australian localYesRequires address proof for purchase
Australian mobileYesTwo-way capable
Australian toll-freeLimitedCheck availability

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