NOTE: This suggestion is for Confluence Server. Using Confluence Cloud? See the corresponding suggestion.
Ability to watch a label and be notified of new content created for a particular label.
Better options for watching spaces
Auto watch pages with keywords you choose
Add The Ability to Watch Labels
Watch tagged pages and optionally summarize notifications during a day
Smart lists (persistent search filters)
User adding and Attachment to a page should have option to NOT trigger email notification (a.k.a. Minor Attachment Change)
Watch a blog post
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