During mail and calendar migration, the Cloudiway platform can migrate permissions and delegations (via a button on the Cloudiway platform).

For office 365 (defined as source or target), the account defined in the connector must be administrator.

  • Full Access and Send As permissions are migrated.
  • Permissions of mailboxes and calendars are migrated

Messaging systems supported

  • Google Apps
  • Office 365
  • Exchange 2010 and greater

Migration of shared mailboxes

Office 365 has the notion of shared mailboxes.
Permissions and delegations of shared mailboxes are migrated.

See this article for more details related to shared mailbox migration.
http://kb.cloudiway.com/migrate-shared-mailboxes-between-office-365-tenants/