I have also found that Yahoo has changed for the worse.
The viewing panel has become so small because of the advertising
on the right side, the list on the left side, the menu on the top, etc, etc.
and I have to keep scrolling from side to side to read the emails.

I am finding that Hotmail Outlook is working really well now that
I am used to it and it is easy to edit emails before forwarding, etc.

Gmail is also top rated but doesn't work well with my Windows XP.

When I have to give up my XP next April and go to Windows 8, I will
be using Hotmail's Outlook.