Gmail has recently introduce new pane features in Gmail. Unfortunately this features hasn’t been rolled out into every Gmail account automatically. The new features makes your Gmail like the desktop email client with the content area separation into two different area. One section contains your email information and next area contains the preview of the email that you want to read. This features is already available in the different email application like Yahoo, Hotmail. Till now Google hasn’t rolled this features into every account. But the user who want this features can enable it from The labs. Follow the below process to enable preview pane in Gmail.
1.Go to labs. Click on Option>>labs
2. Scroll down until you find Preview Pane by Peter B & Michael K
3. Now return to your inbox you can see toggle split pane mode. You can split the preview mode in both horizontal and vertical mode as well as no split.