wits.io sends weekly summaries of great books recommended by Founders and Makers. These are 15 minute book summaries sent to you, weekly via email.
Here is the first summary as an example:
12min is an app with summaries of the best nonfiction books, that can be read or listened in about 12 minutes. Our primary goal is to help you to develop the reading habit and take it to the next level. That's why we offer free and unlimited reading. You can develop the reading habit, learn new things, prioritise your next books to read.