If you don't have an emailer setup follow this http://community.nodebb.org/topic/1008/#7372
NodeBB Notification Email Issue
I'm noticing when I get a notification from this forum, the link is incorrect.
Here's an example URL I was taken to:
What was the subject of the email/notification?
[NodeBB] Chat Input Box Not Visible Mobile
Then, when I tried to click the "Read full topic" link for this notification:
[NodeBB] NodeBB Notification Email Issue
Thanks, @baris! Happy to help.