Awaiting feedback Alerts not reliably working with watched threads


Well-known member
I have had this happen several times: I watch a thread, but don't get any alerts when it has been replied to. Only by going through the "New Posts" do I later discover that there were actually new posts there since the last time I had seen it.

Is this happening to anyone else?


Well-known member
Alerts are sent out once per unread thread. So you don't get alerts on every post, but on the first post after you've read it. That behavior is as designed.


Well-known member
I know. I'm talking about not receiving an alert even for the first unread post. Sometimes I get it, and sometimes I don't.

Like currently, there's a thread on, watched by me. I have checked and read through it, and now there are no new unread posts in it for me. I and go do something else. I come back to, and see no alerts. I check New Posts and find out that the thread actually has had someone post in it.
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XenForo developer
Staff member
To do any debugging, it's important that you don't view the thread when the problem occurs. When you view the thread, you destroy the data that we would need to check to debug it (the last read date in the thread).

If you can find the last alert/email related to a thread when you trigger the issue, that would help (though I can probably track it down in the DB too).


Well-known member
Ok I just checked the thread so the data should be reset as you said.

I won't go into it when it comes up in New Posts again and report it here.

Unfortunately I can't provide when I got the last alert for the thread, its not in my lists of alerts.