iGoogle is my homepage and although I have a Gmail account, I still prefer the Yahoo! Mail experience.
Here is a link to the Google Gadget using the mobile interface of Y! Mail
However, the mobile interface has a lot of fluff and does not fit perfectly in the gadget frame. Therefore I created some gm scripts to make it more useful and provide a better fit.
Main Script: http://userscripts.org/scripts/show/33874
Detail Page Script: http://userscripts.org/scripts/show/33875