Do I need to check the DNC Registry before I send a marketing broadcast to my recipient list?

Under the Personal Data Protection, an organisation is able to send marketing messages without checking the DNC registry if several conditions are satisfied as follows:

• It must have an ongoing relationship with the subscriber, characterised by a business relationship or activity between the organisation and subscriber. i.e. a subscription, membership, account etc. One off transactions or past interactions do not fulfill this definition.
• The content of the message must be related to the subject of the organisation’s ongoing relationship with the subscriber.
• It must provide an opt-out facility at the end of the message, usually in the form of a short code or text message reply. Once the subscriber has opted out, the organisation has to cease sending any marketing messages to that subscriber after 30 days of the opt-out.