- - The person posting the reply changes his/ her mind and deletes the reply (a post can be deleted by the poster if it has not received a reply).
- The reply is spam and has been removed by a moderator (this is the most likely scenario)
This is not a bug in the forum software! The reply notification, if requested, is sent out the moment a reply is posted. And since there are no way to retract an e-mail message you will still get it even if the reply is immediately deleted.
We apologize for the inconvenience.