Google has introduced a future called “Preview pane”. In this future we can read the mails with preview option while we are reading and replying mails. This option looks great at the same time its not comfortable for reading and viewing mails.
How do I enable this future?
Go to gmail labs and find the option “Preview pane’ and click enable
Click the Preview pane option in the right side of gmail. If you don’t like preview pane then you can switch between preview pane and regular view. Its easy to handle.
You can also change the view depends on your screen space
Hope you like this future. Let me know your comment.
Source: Gmail Blog