Yep this is a global option in /admin/settings/user#default-user-settings
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An anti-spam feature that's available on WP allows the site admin to configure WP to hold a comment that has a certain number of links for moderation. It'd be nice to have the same feature in NodeBB, so that is, say, a post has more than 1 link, it is held for moderation, who gets notified by email.
Doable at this stage?
Yeah an auto-moderator plugin would be a superb addition and anyone who makes shall get all the cookies in the land.