The Kindle platform does have many fans. A lot of folks rely on Kindle devices to read books, go through websites, and entertain themselves. Making your website Kindle-friendly would allow you to reach those folks. Send to Kindle is a handy service by Amazon that saves your visitors time sending your content to their Kindles.
Send to Kindle lets your visitors send your posts to multiple Kindles at once. Posts can be saved to the cloud to be accessed anytime. You can install the tool on any website but Amazon has made a WordPress plugin available for it to make your job easier. You can also use the sendtokindle shortcode to place this plugin anywhere.
You can change the look and feel of the button on the Settings screen. You can also use selectors to give the tool more information about title, author, content, and other parts of your content. Custom HTML is supported. Just make sure you use the kindlewidget class. This plugin might not drive a ton of traffic to your website but could make it more user-friendly. It is available for free.