Annoyingly, Outlook doesn’t have a built-in backup tool for the PST file which stores all your data. Equally annoyingly, the free backup tool Microsoft supplies doesn’t work with Outlook 2010. Fortunately, you can work around that.
When the next version of Outlook appears next year, it will include at least one feature that appears to build on Gmail’s threaded conversations idea: combining related (but separate) email conversations into a single item.
