The majority of junk mail can be stopped coming through your post box.
Please contact the Environment Section for your free “No Junk Mail” sticker to go on your letter box to help in this regard.
Please note that letters/post which has your name and address on it but you still consider it to be junk mail, An Post are legally obliged to deliver it to the person/address in question. In this instance, you should contact the company in question to get your details removed from their mailing list.