After the MF9 system update on my S4, I'm finding the stock email application is no longer able to zoom out. This limitation makes reading my email difficult as i have to continually scroll left and right to see all the content. If most definitely broke because of the update. I'm hoping this is be included to be fixed in the next release.
Re: Zooming on Email app not working after MF9 update
I feel your pain. But your difficulty is easily fixed! Open Email app and tap the left soft-key. Then tap "Settings". Tap "General settings" at the top. Then, at the very top, tap the check box next to "Auto fit content".