Apps from the Nexus 5 Android 4.4 Factory Image keep flourishing in and after Google Hangouts 2.0 and the Google Experience Launcher this one is the Email app from Android 4.4 which looks quite similar to the new Gmail UI. Similar to Gmail. it has the swipe to delete and slide-in to view Labels features. If you don’t use Gmail, and would like an alternative, this is a good one to check out. You can also check out the recently launched Evomail app.
Installing the new Email app will replace the old one if your device runs an AOSP based ROM like CyanogenMod or Slimbean ROMs. If you are on a stock ROM, the email app comes from the manufacturer and this install will not replace the email app that already exists on your device.
Rest functionality remains same and you’ll need to set-up IMAP or POP yourself. However, I did notice that for Google apps users, the app automatically assigns the port number according to the imap server you enter. Gmail users don’t need to set this up, but would you do this? Sure, you would if you wish to remove Google’s app on your device.