Yahoo's old (classic) design allowed me to quickly middle-click each mail link and open in a new tab. I like having one tab open with the complete list of recent mails in my Inbox, and separate tabs for each mail that I can dispose of when I'm done with them.
Now with the new design, I can no longer middle-click or right-click and open mails in a new tab. They only seem to open in the same tab, replacing the previous view, then I have to go back to the Inbox, open another mail and so on, back and forth. This is stupid!
With Yahoo I can probably go back to the Classic view, but that might be disabled soon. Also, I otherwise like the streamlined look and aesthetics of the new design. With Gmail and Outlook/Hotmail I don't even think there's a classic version available.
So how can I make every mail open in a new tab with all these web mail services, without having to first open multiple copies of my Inbox?
(I'm using Firefox/Windows, so if an add-on is the only solution, so be it.)