Digest is an AI tool that enables users to create personalized newsletters by bundling their favorite content. Users can select contest sources such as Weather, Google Calendar, Reddit, X, Instagram, TikTok, Hacker News, RSS, YouTube, Product Hunt, Stripe, and more to add to their newsletter. With Digest, you can receive your personalized newsletter via email or read it online. The tool aims to prevent users from missing out on updates from their social feeds and current events. It offers the convenience of compiling multiple newsletters into a single email for easy consumption.