Open your email apps (not the reduce version the full screen apps) click on the top right to the 3 line icon and click setting
And on the top right click”+ add account”
Screen shot from my galaxy Tab note 10.1
The first commercial version, Android 1.0, was released in September 2008. Android is under ongoing development by Google and the Open Handset Alliance, and has seen a number of updates to its base operating system since its original release. These updates typically fix bugs and add new features.
Since April 2009, Android versions have been developed under a codename and released in alphabetical order: Cupcake, Donut, Eclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwich (ICS), and Jelly Bean. As of 2012, over 400 million active devices use the Android OS worldwide.[1] The most recent major Android update was Jelly Bean 4.2, which was announced in October 2012, and was released on commercial devices in November.
Source
Thanks to Wikipedia
A chart showing global Android version distribution from November 2009 to December 2012