The first project, Inbox Zero, is an open-source tool Google has endorsed. It can automate actions like unsubscribing from newsletters and blocking cold emails. It has automated responses based on your rules, a one-click newsletter cleaner, and cold email blocker. It also has inbox analytics to track your email behavior and works with existing email clients. You can host it yourself for better data privacy.
If you want something more flexible, check out Breezemail. This AI-powered tool uses smart categories to categorize your emails and can be used with Outlook and Gmail. It comes with prebuilt categories like Newsletters and Purchases, but you can also create your own custom categories. Breezemail is designed to protect security and privacy, so it's a good choice if you want to keep your inbox uncluttered.