Office 365 Backup & Restore Software

Best Rated Solution by Office 365 administrators to backup Office 365 data and restore mailbox from Office 365 backup. Use SysTools Office 365 Backup & Restore tool to protect data from external threats by backing up sensitive Office 365 emails, calendars and contacts in the offline environment.

(Average Rating 4.8 Based on 2561 Reviews)

Best Office 365 Backup & Restore Tool Recommended by Experts


backup Office 365 emails




  • Handy Solution to Backup Office 365 Data by Saving its Offline Copies on a Local System
  • Download Office 365 Outlook Mailboxes in Bulk and Convert into PST File in One Shot
  • Able to Save Outlook 365 Emails, Contacts, Calendars and Documents Offline
  • Protect Data of O365 Shared Mailbox(s) by Downloading its Data on System
  • Microsoft 365 Backup Tool Supports Backup of In-Place Archive Office 365 Mailboxes
  • Capable to Apply Date Filter for Selective Office 365 Mailbox Backup During Procedure
  • Freedom to Store Resultant Outlook 365 Backup on Any Desired Location in System
  • Supports Concurrent Microsoft 365 Backup Option to Speed up the Process
  • Restore Feature to Retrieve Data in Desired Mailbox or Different Office 365 Plan
  • Quickly Restore Office 365 Mailbox from the Backup of Locally Saved PST files in a Few Clicks


Data Elements Protected By Office 365 Mailbox Backup & Restore Tool


Email Messages Saves email messages from Inbox, Outbox, Sent Items, Deleted Items, Drafts and Junk Email folders with complete metadata properties
Mail Attachment Data Backups all types of attachments, including the cloud attachment whether in the form of document or images
Category & Priority Ensures that Category & Priority are applied on emails consistently after the Office 365 backup
Structure of Mail Folder Keeps the hierarchy of mail folders constant
Date Filter Allows you to save only a copy of a particular range of emails on the specified location
Retention Period Infinite
Save Date In PST


Emails Restore messages with attachment file along with complete metadata attributes and folder structure
Restore from PST file


Contacts The information of contacts such as Email ID, Contact Number, Home Address, Work Address, place can be backed up
Retention Time Unlimited
Save Contacts in PST


Contacts Export Contacts from PST with complete information in Office 365
Restore from PST


Calendar Business Appointments, Meetings are protected on offline platform along with Start Date, End Date, Subject, Location, Category
Store Calendar In PST


Calendar Entries Transfer all the appointments, events, meetings along with their attachments
Only Restore Data From PST or Personal Storage Table File

Why is It Necessary to Backup Office 365?

secure and protect Office 365 mailbox data


It is exceptionally important for users to shield their pivotal information & Secure Office 365 email from cyber attacks & data loss. You never know when you are about to lose something important! Keeping an Office 365 cloud backup will help to restore essential information when required!

backup Office 365 emails and survive the ransomware attacks


With expanding number of ransomware threats, it has turned out to be hazardous for Office 365 clients. SysTools Outlook 365 Backup Solution will surely be a big thumbs up to help restore Office 365 data instantly. office 365 ransomware recovery

keep a safe Office 365 email backup


Virus Attacks worldwide have caused tremendous loss of information & thereby impacting financial damage to organizations. Even protecting crucial data from inside threats from permanent deletion is equally important. Keeping a safe local copy will help overcome such situations.

restore Office 365 mailbox from backup


Insufficient Office 365 data backup during disaster or catastrophe will surely cause huge damage to businesses & its productivity. With SysTools Office 365 cloud backup, you can be sure that whatever data is lost is not gone forever & can be restored painlessly.

use the backup O365 data in the case of accidental deletion


Office 365 provides short retention span for deleted emails which can be retained within a certain time duration. It is not just sufficient to recover lost data when the retention period is over, but to be able to restore office 365 mailbox in time is more crucial. With Office 365 backup utility, save data with unlimited retention period.

Fight Back to Service Outages

Fight Back to Service Outages

Having a backup copy of O365 data in case of service outage or any possible issue is always recommended by experts. Imagine an Office 365 service outage, how do you retrieve your data now? Keep your data already backed up to your local storage and forget the further worries of data loss!

Well-Rounded Office 365 Backup

Safeguard Office 365 emails, contacts, and calendars by saving these to local storage with Outlook 365 Backup Solution

Secure Your Emails

Download offline copy of messages with attachments from admin mailbox, user’s primary mailbox, shared mailboxes. Hierarchy of email folders structure also remains same. backup Office 365 email

Secure Your Contacts

Contact is a significant component for businesses so, save a copy of your current contact list to prevent data loss in disastrous situation.

Secure Your Calendar Entries

Never miss any important appointment even in a data loss situation by having its proper control in the form of backup. office 365 outlook calendar backup

Data Retention With No Time Restriction

Secure your data with infinite retention period time, with Office 365 data backup software. Simply save your backup copy of Office 365 emails, contacts, and calendars in your PC as long as you want.

Backup Data That You Need

You can reduce the time by backing up only the desired Microsoft Office 365 cloud data instead of complete backup. You can select specific folders from source mailbox manually which helps in saving crucial storage space!

Noteworthy Features of Office 365 Backup & Restore Software
Get Acquainted with Advanced Characteristics of Software to Backup Office 365 Emails

backup Office 365 cloud data

Complete Office 365 Mailbox Backup

The Office 365 Email backup software allows users to save data from multiple mailboxes of your Microsoft O365 to local system. This application makes sure that all the data items (emails, calendar, contacts and documents) are backed up securely. Also, when you create the offline backup of Office 365 cloud data, the software keeps the data integrity and meta data properties intact.

office 365 backup and restore mailbox in multiple formats

Protect Data in PST Format

With Outlook 365 Email Backup utility, it is easy to secure offline copies of O365 data into the Outlook file format at any location. The PST file type is supported by all the Outlook versions.

  • PST: Used to save emails, contacts, calendars of Office 365. This file format is also importable into all Outlook editions

secure Office 365 mailbox in batch

Backup Office 365 Mailboxes Data in Batch

Office 365 Backup Tool helps you to create a backup of multiple Office 365 users' cloud mailbox data in your preferred format on a local device in one go. So, there is no need to run the tool again and again for saving every user mailbox data. You only need to login as Office 365 admin and add a CSV file that includes information about source IDs. Afterwards, the software takes the backup of the mentioned address on the designated location.

backup Office 365 shared mailbox data

Facility to Secure Shared Mailbox Data

Shared mailboxes are essential as well as beneficial for businesses and their data-related requirements. With Outlook 365 Email Backup tool, you can easily download data from shared mailbox in the PST format. You do not have to purchase a different utility for the same. In fact, you can also apply email and folder filters on the shared mailbox(es).

Restore Office 365 Mailbox from Backup

Restore Office 365 Mailbox from Backup

Using Microsoft Office 365 Restore option, user can easily restore their mailboxes to Office 365 from PST file. Moreover, one can easily restore multiple PST files back to Microsoft Office 365 cloud tenant in one shot. For this, one should log in to Microsoft O365 account with valid admin credentials i.e. Office 365 Admin ID and Password. After validating your account, the Office 365 cloud backup tool allows the restoration of the mailbox to Microsoft Office 365 account.

Advanced Integrated featured software

Integrated Advanced Features

  • Maintain Folder Hierarchy: This feature downloads the data and keeps the actual folder hierarchy even after the data is moved from the OWA / Outlook Web App to local storage.
  • Date Range: In Office 365 Mailbox Backup software specify the date range in “From” and “To” field. After that, the tool will back up and restore data that lies between the mentioned timeline only.

Install easily on virtual/physical machine

Install on Virtual or Physical Machine

SysTools Office 365 Backup tool can be installed on physical or virtual Windows-based machine. Installation of this tool on a VM hosted in the cloud helps you to keep copy of your data online and manage the backup process from any computer. Moreover, installing the tool on a local machine helps to keep backup copies on the hard drive. Choose this option that is secure and easily accessible.

Tool offers file naming convention

Offer File Naming Convention

A proper file naming convention is the best way to organize emails and identify files. While saving the Office 365 mailbox(es) emails in the PST format, the tool provides the File Naming Convention option. Outlook 365 Backup Software offers some special file name on the basis of Subject, Date, and Time. Choosing this option, helps you manage emails in a more convenient and effective manner.

Backup all Office 365 emails without interruption

Uninterrupted O365 Backup Process

Office 365 Backup tool offers various robust functionalities, and ‘Pause and Resume’ is one of them. This allows you to halt the backup process and resume it later from where it has been stopped.

Import data

Import PST to Office 365

The Office 365 backup tool is capable enough to migrate all data components like Mails, Calendar, Contacts, Tasks, and Journals into Office 365 account. In case of admin login, add a CSV file that comprises information on source and destination path. After that, choose the category of data components and restore to the desired O365 mailbox(es).

Trusted Legal Accurate Backup Solution

Trusted Legal Accurate Solution

SysTools development team created the most affordable and highly demanded Microsoft Office 365 backup and restore software to quickly export Office 365 mailboxes to PST and other classic formats. It also helps you to restore Office 365 mailbox from backup via PST file without any hindrance.

Get the real time status of backup

Real-Time Status of Procedure

The best thing about this Office 365 Backup Tool is that it provides all the information clearly on the framework. Whether you performed Backup or Restore process, the complete live progress report of on-going task appears on the software interface. You will get the information like User ID, Mails, Calendars, Contacts, Status.

cross user restore facility

Cross-User Restore

This functionality lets admin to restore data of one O365 member to another user account. If any employee leaves the organization and its PST resides in the system, then the admin can restore its data into an active O365 user account.

Maintain Data Integrity

Maintain Data Integrity

Another important feature of the Outlook 365 backup solution is that it keeps the data integrity intact throughout the process. This is one of the most important features because it is essential for a utility to backup and restore data in the same format as it was.

Office 365 Backup Tool Free Download

Try All the Features in Free Demo Version of Outlook 365 Backup Solution

Software Download

Size : 91.8 MB

Version : 6.6.1

MD5 : ed45212241b8a7251deb11d3f17e09af

Trial Limitations

Trial version will backup complete Office 365 mailbox data from 2 user accounts.

System Specifications

Hard Disk Space
Around 500 MB for installation & tool requires atleast 5GB of free space to store data

Minimum 8 GB of RAM is recommended

Minimum 8 core Processor 2.3 GHz Processor


  • Minimum Microsoft .NET Framework 4.6
  • Microsoft Visual C++ Redistributable Latest (Visual Studio 2015, 2017, 2019, and 2022) Should Be Installed. Download
  • Create Console Project for both Source & Destination accounts
  • Destination users should be already created at destination location.

Supported Editions

Windows Server 2012, Windows 10 (64-bit)




Electronic Delivery


Request For Software Customization

If you need to customize Office 365 Backup & Restore Software or need additional features then, Request Quote


Get an Overview of Office 365 Outlook Mailbox Backup Tool Features - DEMO and Licensed Version

Features Demo Version License Version
Multiple User Backup
Import From CSV & Server User A/C details
Windows 10 & Other Previous Versions Supported
Add Time Interval
Backup Office 365 Email, Contacts, Calendars, Documents 2 User Accounts All Items
Restore Office 365 Mailbox from Backup 2 User Accounts All Items
Cost FREE Starting at $25
Frequently Asked Questions

Commonly Asked Questions and Answers

How to Backup Office 365 Mailbox using Office 365 Backup Tool?

5 Steps to Backup Outlook 365 Mailbox Data:

  • Step 1. Run Office 365 Mailbox Backup Tool.
  • Step 2. Choose Mailbox Categories to Backup.
  • Step 3. Enter Admin credential to Sign in.
  • Step 4. Set Destination Location to Save PST file.
  • Step 5. Select User Accounts & Click on Start.

The software allows to backup O365 mailboxes in a completely safe and secure manner. Even a single bit of information (like client name) is not shared by the application. Similarly account credentials are not saved, neither on our server nor on any third party system.

Cloud storage cloud be risky from security as well as business standpoint. The data stored on cloud is vulnerable to cyber-criminal threats that may lead to major security breach. Taking backup ensures that the O365 account data is safely stored on the local machine and is secure in case of any unforeseen catastrophic situation.

We offer Outlook 365 Email Backup utility in two versions, Free (Demo) and Licensed version. Using the freeware version, you can easily test its potential and performance and be sure of investing in the right/best solution. The full version allows you to migrate unlimited O365 (Outlook Web Access/App) emails, contacts and calendar into two file formats.

Yes, this tool allows you to backup Office 365 shared mailboxes to any user mailbox or shared mailbox.

Yes The backup and restore mailbox process is completely invisible (process goes on in background) to users. So access to mailbox does not get affected while backup goes on.

No, the Outlook 365 Backup and Restore tool does not put any limits on the size of the backed up Outlook 365 Mailbox items.

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