Office 365 Email Backup Tool To Backup Microsoft 365 Mailbox to PST/ MBOX/ EML/ MSG/ vCard

Regain Office 365 Email Backup Tool is a safe and reliable utility to backup Office 365 mailboxes to PST, EML, PDF, MSG, vCard and other file formats. The software allows the migration of Office 365 Emails into multiple email clients such as Gmail, Yahoo Mail, New Office 365, Exchange Server, etc. It offers backup or migration of Primary Mailbox, Public Folder, and Archive Mailbox into 15+ saving file formats and email clients.

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  • Allow users to Take Backups of Office 365 Mailboxes to User System professionally
  • No limitations on the size and number of Office 365 mailboxes for backup.
  • Users can simply opt for Primary Mailbox, Public Folder, and Archive Mailbox for backup.
  • Along with Office 365, it also facilitates backup of Exchange Server(On-Premises).
  • It offers multiple prominent file formats like PST, EML, EMLX, MBOX, MSG, vCard for backup.
  • Users can precisely select the folder for the backup to get only the desired one.
  • Software expertly maintains the folder hierarchy and data integrity.
  • This utility is compatible with all the versions of Windows OS.
  • Round-the-clock free technical support with Regain Software.

Free Demo: Download trial version and migrate 30 items per folder free.

03 Simple Steps to Backup Microsoft Office 365 Email


How Does Microsoft Office 365 Email Backup Tool Works?

Regain Office 365 Email Backup Tool offers multiple prominent file formats like PST, MBOX, EML, MSG, vCard, et cetera.

Office 365 Mailbox

Regain Office 365 Backup Tool


Why do User Need to Backup Microsoft Office 365 Emails?

As a Preventive Step

Everyone wants to properly handle the utmost data and we know email stores crucial information. With a backup in local storage, users can keep a backup of Office 365 emails, which comes as a boon in any unwanted scenarios.

To have Offline Access to Emails

If, for any reason, users are unable to log in to Office 365 and need email data, then having a backup in PST file format helps to do so. The user can simply add the PST file and access the data in Outlook. It also helps when you accidentally delete any email from the Office 365 mailbox.

To Manage Office 365 Storage

Users can also free up the space of the mailboxes by archiving them in the local storage. Emails of Archive Mailbox can be archived in the local drive, and space can be freed up from the storage. It helps to manage the storage and reduce the cost by managing the subscription plans.

Technical Specification

It is advised to read all the technical specifications before installing Regain Office 365 Backup Software.

Office 365 Email Backup Tool box

System Requirements

  • Processor - Pentium Class
  • Memory - Minimum 128MB RAM (512MB recommended)
  • Hard Disk - 50 MB for Software installation
  • Disk Space - Enough space to store recovered output

Version Supports

  • Windows OS Platforms - Windows 11/10/8.1/8/7/Vista
  • Windows Server - 2012/ 2008 R2/ 2008/ 2003 R2/ 2003
  • MS Outlook - 2021/ 2019/ 2016/ 2013/ 2010/ 2007 and 2003
  • Exchange Server - All Versions

Prominent Features of Regain Office 365 Email Backup Software in Detail

No Limitation on Office 365 Mailbox Size

The mailbox size doesn't affect the efficiency of the software; it works seamlessly. Users can easily add mailboxes of any size, and the tool will back up without compromising the backup speed. It also facilitates managing mailbox size by having a backup and freeing space.

Backup Office 365 Emails in No Time

This advanced tool developed by Regain Software is designed to provide a fast and efficient way. It takes backup very quickly, saving time for the professionals by all means. It speedily fetches mailboxes and takes backups in the prescribed file format.

Backup Exchange On-Premises

Along with Office 365, this utility can also connect Live Exchange/ Exchange On-Premises as a source and backup Exchange Server. All the file formats available to save Office 365 mailboxes are available for Exchange On-Premises. This facility helps users running a hybrid environment or having Exchange On-Premises with the backup.

Multiple File Formats to Save Emails

To answer the needs of all users, Office 365 Email Backup utility offers backup in multiple file formats. Some standard file formats are PST (Personal Storage Table), MBOX, EML, EMLX, MSG, et cetera. Users can simply opt for the desired file format and the tool will back up in the same. With PST file format users have the advantage of adding it to Outlook.

Preserves the Folder Hierarchy

The software keeps the data originality intact and possesses all properties. It properly maintains the folder hierarchy; you will get the same in the resultant file format. Moreover, it preserves the meta properties and all other source attributes. It provides unaltered data in the target file.

Specific Folder Selection

Regain Office 365 Email Backup Tool allows users to select the folders before initiating the backup process. Users can simply uncheck the folders they don't want to back up. Users will get only the desired data in the target file by making this selection.

Compatible with All Windows OS

There is no need to worry about the version of Windows OS to run the Regain Office 365 Email Backup Solution. This tool is compatible with all versions of Windows and works seamlessly in all. It is tested and verified in all including the latest Windows OS version.

Round-the-Clock Technical Support

To provide the best working experience with the Regain Office 365 Email Backup Tool, we provide 24*7 free technical support. Users can easily reach us through the Live Chat option or by telephone. You can also write to us at or We have an in-house support team to assist you.

User-Friendly GUI

The software is developed to provide an easy-to-do backup task and comes with a user-friendly GUI. Any user (technical or non-technical) can easily back up Office 365 emails to PST or any other file format on its own. It's a simple and interactive GUI that makes the process a cakewalk.

Try Before Buying Facility

Our tool is tested and verified; hence, we offer a free trial version of the software to try before buying. The demo version is just a restricted version of the full version (licensed version) and allows backing up the first 30 items per folder. However, there is no such limitation with the licensed version.

A Practical Case of Microsoft Office 365 Mailbox Backup Software

Check a Real-Time Scenario of Microsoft Office 365 email backup tool

Case Most users want an Office 365 email backup in PST file format; however, there are also some requirements for MBOX file format, and our organization needs backup in both MBOX and PST. All case studies show that all organizations keep at least one copy of the email data apart from the cloud and they need a professional way to do so; and we too. How to handle backup in both these file formats; any suggestions?

Solution To address the email backup needs of users, the Regain Office 365 Backup Tool is a one-stop solution. Using this tool, users get the option to save email data in PST and MBOX file format. Your organization can take backups in PST, MBOX, and MSG like prominent file formats with this single tool. Install its trial version and explore its features independently; it suits your needs.


Have a look at the reviews and see what our valuable customers and other software companies say about us:

Software Reviews


CNET Several MVPs have recommended Regain Office 365 Email Backup Tool as the most user-friendly. It has a crisp, simple, and easy-to-understand GUI, which is what a user-oriented utility should have? View Details →


Software Suggest Our team evaluated the software on user-friendliness, backup speed, and efficiency. Regain Office 365 Email Backup Software ranked top among all. An effortless and efficient utility. View Details →

Client Reviews

Compare the Free Trial Version of the Software with the Licensed Version

Look at the features and get a better gist of the free and paid software version of Microsoft Office 365 Email Backup Tool.

Software Features Trial Version Full Version
Backup complete Office 365 mailbox items 30 emails per folder All emails
Support Office 365 Home and Business Plans
Save Public Folder, Shared Folder, In-Place Archive
Backup Office 365 mailbox into PST, MBOX, MSG, EML, EMLX, and vCard
Preview all available mailbox folders
Selection of specific mailbox folders you want to backup
A highly intuitive user interface for a better user experience
Reliable utility to maintain mailbox integrity and confidentiality
Free technical support
Widely compatible with all Windows OS
Instantly Backup Microsoft 365 Mailbox  Download  Buy Now


Clear all your doubts with the questions asked by our clients.

You can take backup your Office 365 emails by following the below steps.

  • First, go to and download the Regain Office 365 Email Backup Tool.
  • Install and launch the application. Enter your Office 365 username and password.
  • Now, you see your mailbox folders. Select the desired items and press Next.
  • After that, choose the output file format and click on the Next button.
  • Browse the destination folder and click on the Next button.
  • At last, wait for finishing the process of Office 365 backup.

Yes, you can also backup Office 365 mailbox items manually, but the procedure is quite troublesome. You must be a technical expert to perform the steps. So, we suggest you use the professional Office 365 Backup Tool. For taking backup of Office 365 account manually, read this post: Read here

No, you do not need MS Outlook installation in your system to export Office 365 mailbox as a PST file. However, to read PST files, you need Outlook in your system.

Of course, the Regain Office 365 Backup utility is compatible with Windows 11 and other versions.

Yes, the Office 365 mailbox backup tool can download the In-place Archive, provided that the In-Place archive must be turned on in your Office 365 account.

After logging in to your mailbox account, the Office 365 Backup Software will preview all the mailbox folders available in your account. Also, you can choose only specific items that you want to backup and leave the rest. It will allow you to save only the necessary items.

No, the application maintains the hierarchy of your mailbox content. It does not manipulate the mailbox structure or file content.

You can download the free demo version to evaluate the Office 365 Backup Tool. The demo version is similar to the premium tool except for the restriction of 30 emails per folder.

No, there is no limit. User can take backup unlimited file size of Office 365 account.

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