huge step backwards
The new Yahoo Mail desktop version is a huge step backwards. I have three Yahoo accounts and I used to be able to manage them much more efficiently. Now I have to switch between accounts instead of having a convenient unified view. The old interface was much more practical and user-friendly. Please bring back the option to view and manage multiple Yahoo accounts together, or at least give users the choice to use the previous interface. Don't remove useful features just to make the interface look newer.
4th
ranked