Discount airline Tiger Airways has been handed an AU$110,000 fine, and has given an enforceable undertaking to the Australian Communications and Media Authority (ACMA) for not allowing its customers to unsubscribe from email mailing lists.

The ACMA said that it had warned Tiger several times, and that the company had received repeated complaints from customers that its marketing emails did not let customers unsubscribe from the mailing list. Tiger said in a statement that it deeply regrets the mistake.