@worldsendless I don't think Mastodon has got this feature. We have Delete & Redraft, but that's not really the same as a preview time here.
@worldsendless Well, Delete & Redraft still requires you to have sent off a toot into the Fediverse. Everybody can already read it until you Delete & Redraft it.
From what I can see of that twitter image is that there's a preview and you can still adjust before your tweet goes live. So nobody can read it yet.