#7. Hide/unhide users’ email addresses from the destination global address list

When the source mailboxes are still in use, and destination mailboxes are not put in use, you can hide users’ email addresses from the destination global address list to avoid destination users from viewing the newly added email addresses in the global address list. Refer to the step 6 in for details. You can also unhide users’ email addresses from the global address list when the migration of source mailboxes is finished, and the destination mailboxes are ready for use. Refer to for details.