Under the ePrivacy Regulations (SI 336 of 2011) marketing calls to mobile phones are prohibited unless:

1. The caller has been notified by the subscriber or user that he or she consents to the receipt of such calls on his or her mobile telephone, or

2. The subscriber or user has consented generally to receiving marketing calls and that such consent to receive marketing calls is recorded in the National Directory Database in respect of his or her mobile telephone number.

In relation to email and mobile phone text-based direct marketing, it is an offence to send such communications to an individual without their clear consent in advance. In the case of direct marketing emails and text messages to businesses (as distinct from individuals), such messages may be sent until such time as the sender is requested by the recipient business to stop. The sending of any subsequent marketing messages to the business concerned would then be an offence.