Android

Microsoft has updated the Outlook.com application for Android with a completely new user interface and lot of new features. This is a major update since the launch of the app back in November 2012. The new update bring a simple user interface similar to the Windows 8 and the outlook.com web application. Additionally this update also adds new features including conversation threading, filters for unread and flagged mail, as well as the ability to mark messages as junk.
In a blog post Microsoft says,

We believe that the best mobile experience is enabled through Exchange ActiveSync–which provides a rich, powerful, network-optimized experience for Windows Phone, iOS and other mobile devices. However, native support for Exchange ActiveSync on Android devices varies significantly and so we build a separate app to ensure as many people as possible can have a great Outlook.com experience across all their devices.

New features in Outlook for Android 

• New look and feel
• Filters for unread and flagged messages
• Conversation threading
• Marking messages as junk

Download Outlook.com app for Android from the Google Play for free.