did I read right in other posts that email notification is not included in NodeBB? Or at least it requires a plugin installation and manual activation for each user (at their user profile)?
Is this still true or was it outdated information?
@markus9876 A little bit of both
It is outdated in that as of v1.6.0, you no longer need to use emailer-local to send emails via sendmail or postfix or whatever.
NodeBB has supported emails for discussion replies and mentions for many versions now