We sort of can on our wicked awesome cool people Pylova instance, a fork of stinky Piefed. Bookmark and also reply notifications. That’s a thing for both the entire post and individual comment chains, your own or others.

Lemmy webUI doesn’t have the same notification inbox feature, but the bookmark button is a Star icon on Lemmy instead of a Bookmark graphic.

Edit for better new user clarity.

On Lemmy, the save function (star icon) does give a number beside the comment count icon. Like 4 comments (2 new). Still a manual check, though.

Also Lemmy’s comment discovery (the chat sort method) is harder to follow with context, not as good as Kbin’s unread highlighting was.