#Smart Folders
Postbox
A powerful Mac email client supporting multi-account management, intelligent search, and efficient categorization. With customizable workspaces and batch operation features, it significantly enhances email handling efficiency, making it the ideal choice for professional users and team collaboration.
ReadKit
ReadKit is a powerful unified reading management tool for macOS and iOS, integrating RSS subscriptions and popular read-later services such as Instapaper and Pocket. It supports smart folders, offline reading, and multi-device synchronization, helping you efficiently organize and read all your content.
Thunderbird
Thunderbird is an open-source, free email client developed by Mozilla, offering unified management of multiple accounts, built-in calendar and contacts, powerful email organization, and secure encryption features. It serves as a desktop solution to replace web-based email services.
Vienna
Vienna is a free, open-source RSS/Atom reader designed specifically for macOS, featuring intelligent folder management, an integrated browser, offline reading, and OPML synchronization. With a clean and efficient interface and fully local operation to ensure privacy, it is an ideal choice for Mac users seeking online news and content.