Enjoy the Give and Take of Discussions in Your Feed
Where: This feature is available in Lightning communities accessed through Lightning Experience and Salesforce Classic. Communities are available in Enterprise, Performance, Unlimited, and Developer editions.
Why: A thread is any feed item that has one or more levels nested under it. For example, a question with an answer or a comment with a reply is a thread. A threaded discussion can have up to three levels of replies. Discussions are indented to make it clear who’s responding to what.
We also updated notification emails for threaded discussions. When you click a link in an email to a thread, it takes you directly to the answer or reply. In the olden days, a notification link took you to the top of the thread.
How: For new communities, threaded discussions are available by default. For existing communities, go to your community’s Administration Workspace. Under the General heading in Preferences, select Allow discussion threads and click Save.