Well, I have just tested FoF Subscribed 0.2.0 (with Flarum beta 10), but post/discussion in email is not visible.
discussionCreatedblade.php has this lines:
Additionally, you can find the contents of the first post in this new discussion below
---
{{ $blueprint->discussion->firstPost->content }}
but text/content below --- is clipped...
Also, in domain.com/settings we now have a new option which is showed like this:
fof-subscribed.forum.settings.notify_post_unapproved_label