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Microsoft Office 365 Exchange Online Email Backup

Multiple concurrent / sequential backup to these destinations:


China Telecom CTYun

Amazon S3

Amazon Cloud Drive

Google Cloud Storage

Google Drive

Microsoft OneDrive

OneDrive For Business

Microsoft Azure




Try it for free

Comprehensive Office 365 Exchange Online Email Backup Solution

As more and more businesses migrate from on-site applications to the cloud applications in recent years, the Office365 adoption rate is soaring high. However, data loss caused by human errors and cyber attacks becomes the main concerns. With CloudBacko, now you have the best backup solution to protect your emails on Office 365 Exchange Online by backing them up to local storage or another non-Microsoft cloud automatically everyday. It gives you peace of mind about your Office 365 Exchange data as you can restore your emails, contacts, calendars anytime just through a few simple clicks.

Don't think you need to backup Office365 emails? Click here to understand why you have to.

Full mailbox or brick-level backup

CloudBacko enables Office 365 administrators to back up all or selected mailboxes under their accounts with just a few clicks. Besides the full mailbox, you can also backup and restore brick-level items such as emails, contacts, calendars and tasks.

Lightning fast

It is one of the fastest Office 365 Exchange Online backup solution available in the market because of its built-in speed boosting technologies, e.g. multi-thread, concurrent backup to multiple destinations, In-File Delta block-level incremental hot backup, configurable compression, etc.

Concurrent multi-destination backup

Need to keep multiple copies of backup at various local and offsite locations to prevent data loss disaster from happening? CloudBacko can do it by concurrent or sequential backup of your data to multiple destinations.

Continuous backup

For frequently changing data in Office 365 Exchange mailbox, you can enable the Continuous Backup feature. CloudBacko will then keep backing up your data in the background continuously.

Keeping unlimited versions forever

You are able to define flexible versioning rules to keep the historical versions of your Office 365 Exchange data. If you need to keep more recent versions and fewer over time, it can be easily achieved through the retention policy setup. Those versions can be kept forever if needed.

Unbreakable 256-bit encryption

If you decide to backup Office 365 mailbox data to other non-Microsoft cloud storage, you should enable the built-in encryption feature that can encrypt everything with a 256-bit truly randomized key, including all the data and filenames, making your backup data unbreakable by hackers.

Guaranteed recovery

With our backup data integrity ensuring technology, restore drill test can be frequently run to ensure the restorability of your backed up Office 365 Exchange data.

Easy to use, no training required

CloudBacko comes with the most intuitive user interface that is so easy to use. No training will be required to get started. Whenever you need assistance, the Help button on each page gives you the answer right away.

Clear insights and reporting

With CloudBacko's reporting tool, you can get crystal clear visibility into the backup details of all destinations, including usage trend, backup and restore reports, log for warnings and errors, etc.

Free software update

The price of CloudBacko Pro and CloudBacko Lite already includes free unlimited software updates within the same version. CloudBacko Free will also frequently update with the latest features.


"Recently we started using CloudBacko software which has turned out to be a powerful backup solution in which we will be now offering to all our managed customers."

Adam Maher
CEO of ITC Business Solutions Pty. Ltd.
"I chose Cloudbacko after trialling several similar programs because it was the only one that could effectively backup my large Outlook PST file by Delta block-level increments to Amazon Cloud Drive..."
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Ian McCubbin
Principal of Ian McCubbin & Associates
"Cloudbacko Pro is absolutely amazing for all my needs, I wont waste that :)"

Gregory Kneier
Managing Director of usecure GmbH
"Cloudbacko offers great backup options within our customers budget. It also protects their valuable files by auto scheduled backups against ransomware threats."

Co-founder at Esantral Corporation - Turkey
"You have a great straightforward application, I'm glad that I found it."

Sam Gorton
Information Technology Specialist of Quality Structures, Inc.
"When looking for a backup solution for a Linux server, we tried Duplicati, Veeam and a couple others. CloudBacko was the only one that worked as advertised, out of the box."

James Simmons
Keep-in-Touch Systems

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