I just joined a Discourse forum with thousands of old posts. I would like to mark all of them as "unread"

[ClawdiaWolf (Claudia)]

@Buzz1

So, the only way to mark all the all posts made before my account was created as unread would be to manually click on every single one of them, and then scroll to the bottom and click “defer”?

If you want to show them on the Unread tab, yes.

@Canapin

I’m supposed to know fairly well how Discourse’s interface works , but I can’t see what you refers to. Where is the “defer” button?

There’s a checkbox in the interface preferences that enables it. When you enable if there’s an option at the bottom of a thread with the other topic controls that you can click. It marks the topic as having the last post as Unread.

I use it quite often on the NaNoWriMo forums.