We're working on https://tweetsmash.com that aims to streamline consuming high-signal information from Twitter. It can help you setting up weekly/daily email digests from bookmarks. Furthermore, it can also help fine-control what tweets gets into a digest. Like you can have separate digest for Business, or Development, or just Recent bookmarks.

Our main goal is to streamline curation and consumption process. Apart from bookmarks digest, it can also connect to third party apps part of creative workflow. Right now, we have one-for Notion to auto-sync bookmarks and for Zotero to auto-sync research papers when research scholar bookmark a tweet with a journal/research paper in it.