As an Office 365 admin, you can use Customer Lockbox to control how a Microsoft support engineer accesses your data during a help session. In cases where the engineer requires access to your data to troubleshoot and fix an issue, Customer Lockbox allows you to approve or reject the access request. If you approve it, the engineer is able to access the data. Each request has an expiration time, and once the issue is resolved, the request is closed and access is revoked.
Get a cloud-based, enterprise-class archiving solution that helps you to solve archiving, compliance, regulatory, and eDiscovery challenges. Hosted on Microsoft globally redundant servers, with IT-level phone support 24 hours a day, seven days a week, Exchange Online Archiving is compatible with Exchange Server 2016, 2013, and 2010. It’s also available as an add-on service for mailboxes that are hosted online.