Hi, and thank you for asking your question.
Juno does not allow you to manually backup/save the address book as a file; however, you may carry out a full backup of your Juno data - including your emails accounts, address book and settings - as follows:
Close Juno first, if running.
Go to Start > All Programs > Juno > Juno Backup Wizard.
Follow the on-screen directions to back up your Juno data to a location of your choice.
For stepwise directions on backing up/restoring your Juno data, please check out the following support article:
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