Change Postbox Email Address or Username
Before you update the email address associated with your account, make sure all documents on your device are synced to Postbox.
The email address associated with your account can be changed by logging into Postbox and then selecting Account Settings from the dropdown menu.
After your email address is changed, log out of your Freewrite by pressing the power button for 5 seconds and then log back in again using your new email address.