Newsletters will be rather rare, usually less than 1 per year. They include unsubscribe if you decide you are no longer interested. We will use them to notify you of product information such as recalls, new features, upgrades, etc. Of course we will never sell or distribute your email address to anyone or any other organization and we collect this data for no other reason than as stated here. Our email list provider (in the US) has an excellent record of not being hacked but of course that is always possible.