True Image 2021
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Your digital life – protected

Microsoft 365 (formerly Office 365) Backup

Considering how much personal information we store in Office 365, keeping emails or OneDrive content safe is critical to protecting your data against accidental deletions, interruptions in service, and other threats.

Acronis makes it easy to back up your Office 365 mailbox and OneDrive directly to the Acronis Cloud. Safeguard all of the emails and attachments in your Microsoft, as well as the files and folders stored on your OneDrive, with secure, password-protected backups. Restoring your files is quick and easy too.

Here’s how to back up Office 365 business accounts.

Microsoft 365 (formerly Office 365) Backup

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Works on multiple platforms


  • Windows 10 (all editions, including October 2020) 
  • Windows 8.1 (all editions)
  • Windows 8 (all editions)
  • Windows 7 SP1 (all editions)
  • Windows Home Server 2011
  • macOS Big Sur 11.0
  • macOS Catalina 10.15
  • macOS Mojave 10.14
  • macOS High Sierra 10.13
  • macOS Sierra 10.12
  • OS X El Capitan 10.11
Windows File systems
  • NTFS
  • Ext2/Ext3/Ext4
  • ReiserFS(3)  
  • Linux SWAP  
  • HFS+/HFSX  
  • FAT16/32/exFAT  
MacOS File system
  • APFS
  • HFS+
  • Core Storage
  • FAT32
  • NTFS (including Boot Camp)
  • iOS 10.3 or later
  • Android 5.0 or later

Looking for help?

Frequently asked questions
How am I able to back up emails?

If you want to create an Office 365 email backup, Microsoft allows users to manually export their mailbox. It is a complicated, multi-step process that can take a lot of time, especially less technical users who may not be familiar with the data migration process. As a result, manually creating regular backups often becomes a barrier for many users.


An easier and more reliable approach is to use Acronis True Image as your Office 365 email backup and restore tool. In just a few clicks, you’ll begin making automatic backups – removing the tedium and headaches caused by the manual process. Plus, you’ll be able to search for emails and files within the backup, making it easier to retrieve the data you need.

How can I backup emails automatically?

Since Microsoft only allows manual exports, the best option for an automatic backup of an Office 365 mailbox is to use a third-party solution like Acronis True Image. The cloud-to-cloud backup can be scheduled whenever you want without affecting your own system’s performance. When it comes to Office 365 mailbox backup solutions, it is the most reliable and provides a host of other capabilities as well.

Is there a “how to back up contacts” available?

While Acronis True Image’s Office 365 backup does not include contacts, you can easily download them to your desktop. Log in to Office 365, click the Apps icon in the upper left, then click People. Select Manage > Export Contacts and then pick the contact folder or all contacts. Export to save the file to your computer.


Once downloaded to your computer, you can back up the exported file using Acronis True Image.

Media center and forum

In case you have any difficulties, product materials can be found in our Knowledge Base. Be sure to check out video tutorials and other documentation. You can also post questions on our discussion boards.

Phone support

For subscription owners, there is free, 24-hour technical support. Refer to the Technical Support Site to find the appropriate support phone number.