I don't like the yahoo email format where it displays 10 emails per page.
1. It is harder to delete large numbers of emails. If you are trying to delete emails and you want to keep a few, you are only limited to the 10 minus the emails you want to keep.
2. It is less user friendly. I have to scroll all the way down through a really long email to get to the action items ( reply, delete, forward...) at the bottom.
3. It doesn't allow me to favorite certain emails. I like this feature. It lets me mark an email I need to follow up on, or make sure I keep.