When posting a new message there is the option "Send all responses to my email".
Why not show this also for replies?
Sometimes a message is interesting enough to get responses even when not the original poster.

Bump!
 
This would be great for getting customers back to a particular website.
 
Has anyone had this function added as custom work. I am sure the code could configured to send to all email addresses in the forum messages table for a particular thread id perhaps.
 
I will submit a custom work quote request as this could double daily traffic if your forum is used by a lot of users.
 
Regards
 
Dave