Tetra WebBBS Configuration
Set $AllowEmailNotices to "1" if you want users to be able to request e-mail notifications when someone responds to their messages.
Leave it set to 0 if you want to require them to visit the BBS again to find out.
New in 6.20: If set to "2" this option is only available when starting a new thread but is disabled for responses.
Available settings: 0/1/2
This setting ONLY defines whether or not people can request automatic notifications of responses to their own posts, and is distinct from the $email_list variable which defines what, if any, new post "subscription" capability your board will support.
Like the other e-mail functions, the automatic notification of responses will be disabled if you don't define the $mailprog variable and it of course requires either Sendmail or an SMTP server to be available to the scripts.