Editing a post and the undo timer

When you tap Post, your post goes live right away. If you're on a plan with an undo window, you get a short period afterwards to take it back.

Undo — tap the three dots (···) at the top of your post and choose Undo post. A countdown next to it shows how much time you have left; once it runs out, the option disappears. Undoing removes the post.

Editing — once a post is fully live, you can still open it and choose Edit from its menu to fix wording. It's best used for small corrections — a typo, a broken link — rather than substantially changing the point of the post after the fact, since any replies and reposts made before your edit stay attached to the post exactly as it now reads, which can look confusing if the meaning has shifted significantly.