"Just like email, I can favorite/star articles I love or want to revisit later. I can utilize tags and Quick Filters and tabs. I can search them, save them, print them, and delete them. Plus, sharing something is as easy as forwarding an email."

Thunderbird + RSS: How To Bring Your Favorite Content To The Inbox

https://blog.thunderbird.net/2022/05/thunderbird-rss-feeds-guide-favorite-content-to-the-inbox/