AmazonSmile is very simple to use—all you need is an Amazon account. On your first visit to the site, you will be asked to log in to your Amazon account with an existing username and password (you do not need a separate account for AmazonSmile). You will then be prompted to choose a charity to support. During future visits to the site, AmazonSmile will remember your charity and apply eligible purchases towards your total contribution—it is that easy.
Once you have selected a charity, you are ready to start shopping. However, you must be logged in to smile.amazon.com—donations will not be applied to purchases made on the Amazon.com main site or mobile app.