We earlier saw the leak of the Gmail app from Android 5.0 Lollipop which included the all new Material Design as well as the multiple account support and now, the official Gmail app from Play Store has been updated with the Material Design.
The Gmail 5.0 apk is the official one which is available for download from Play Store and includes the Material Design and multiple account support. Once installed, you will be able to update this Gmail app directly from Play Store without the need to install new apk’s each time.
You can install the Gmail 5.0 apk which is available for download from Play Store from the link at the end of this article. It can be installed easily on any device running Android 4.0 Ice Cream Sandwich, Android 4.1/4.2/4.3 Jelly Bean and Android 4.4 Kitkat by following the instructions in this tutorial article.
Note: You will also need to download and install the Exchange apk for the proper functionality of the Gmail 5.0 Lollipop which is also available for download from the link below.