For those who read Gmail via its Web interface, including in Mailplane, Google has released a Gmail Labs feature called Preview Pane. It gives Gmail a vertical interface with labels on the left, a vertical list of message summaries in the middle, and the main conversation display pane on the right. It works best with wide screens, though if you have a tall screen, you can switch it to a horizontal split instead of a vertical split. The approach is much more like Gmail’s tablet interface, and in turn like Mail on the iPad. follow link
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Set Your Default Printer
If you print mostly to a single printer, make sure it's selected in the Print & Fax preference pane's Default Printer pop-up menu.
Gmail Gains Optional Preview Pane