Over the years my wife & I have generated seven email addresses that we use for an assortment of purposes. With Outlook (which we are trying to move from) we had a single address book that was common to all the emails. As we started from the other end this time (opening the 7 existing email accounts first); we see that each email has the option to establish its own address book. Our question is this: Can we establish a single address book that will be the default for all 7 emails? The individual address books for each email identity may have their place later, but we would prefer to migrate existing contacts to a destination that will be a common source for all 7 email addresses; as this is how we've operated in the past. Thank you all in advance for your assistance!