From www.claytonutz.com: The Australian Communications and Media Authority fined Telstra $626,000 for sending nearly 10.5 million text messages that violated the Spam Act due to a non-compliant unsubscribe facility.

The investigation revealed that Telstra’s unsubscribe process required recipients to log in or provide personal information, which contravenes Spam Act regulations.

Businesses must ensure their unsubscribe options comply with specific rules, including not requiring account access or additional personal information beyond the recipient’s contact details.