Some forums do work in a way that’s similar to that, though it’s usually more “real time” than day by day:
- The next reply after your previous visit will prompt a notification email
- After that, no further notifications will be sent until after your next visit.
I don’t think this forum aims to work that way though:
- Forums which do that usually mention in the notification message that there will be no further notifications until you next visit
- With that scheme, whenever you visit the site and find any qualifying new messages, you will always have been sent a notification about one of those messages.