Maestro details:
Introducing Maestro: a better mail client for Windows Phone. With unique features like account themes, gestures, and favorites, Maestro helps you manage your inbox quickly and efficiently.
Features:
-Account Themes
-Gestures (Swipe to Delete, Archive, or Reply)
-Favorites
-Multiple Accounts with Linked Inbox view
-Fast Account Switching
-Support for Gmail, Outlook, and Yahoo Mail
-Label Support for Gmail
Thanks @LumiaManOfSteel for the tip. Cheers!!