If you are a Gmail user you might be pleased to know that Google has just added a new Preview Pane feature to its Gmail Labs. The newly added preview pane allows you to view whole messages rather than just small snippets in a similar way to layouts in Outlook’s Preview Pain and also Gmail when viewed on a tablet device.

To enable the new Gmail Preview Pane simply login to your account, then go in to Labs with your settings, scroll down to the "Preview Pane” in the alphabetical list, enable and save. Once enabled you can then either view the preview pane horizontally or vertically.

By default there is a 3-second delay in marking a conversation as read after previewing it but that can be changed in the setting as well if you prefer a faster or slower delay.

Source: Google