Readwise Grow wiser and retain books better: Readwise sends you a daily email resurfacing your best highlights from Kindle, Instapaper, iBooks, and more.
BookGorilla.com: Get Bargain Bestsellers and Free Books for Your Kindle BookGorilla sends you a single daily email alert with the best deals on Kindle books that match your reading preferences, including bestsellers and freebies.
WIN-911 Industrial Alarm Notification Software - The World's Most Trusted Solution The world's most installed industrial alarm notification software, WIN-911 sends millions of alarm notifications daily, reducing plant downtime and costs.