Trustworthy 4n6 Software

4n6 Office 365 Backup Tool

All-in-one Best Office 365 Mailbox Backup Software for complete mailbox backup of O365 accounts. It's built by industry experts for Office 365 account backup. Protect your mailbox from external threats by backing up sensitive Office 365 email, calendar, contacts, tasks, and more in an offline environment with the 4n6 O365 backup tool.

Software Rating (Average Rating 4.9 Based on 2415 Reviews)

Free Download

4n6 Office 365 backup tool box image




Best Office 365 Backup Software

  • Backup Microsoft 365 Data into Multiple File Formats: PST, MBOX, PDF, EML, etc.
  • Migrate Complete Admin O365 Mailbox into IMAP Account in a Single Go
  • Backup Office 365 Items Such as Emails, Contacts, Calendars, Attachments, Notes, etc.
  • Supports Backup of In-Place Archive & Shared Mailbox of Microsoft 365
  • Office 365 Backup Tool Maintains 100% Data Integrity During Backup Process
  • Option to Apply Date Filter for Selective Office 365 Data During Backup Procedure
  • Advanced Utility Auto Detect the IMAP Server or IMAP Port Number of O365 Account
  • Provide the File Naming Option While Exporting Office 365 Emails to PDF, HTML, etc.
  • M365 Backup Tool Also Provides Freedom to Select Resultant File Path on System
  • Backup Office 365 Account Data to Any Desired Format or Any Different M365 Plans
  • Backup Office 365 Items in Any Windows OS Including Windows 11 & 10

Free Demo Version Limitation: 4n6 Office 365 Backup Software is available in a Free Demo version and allows to backup 10 Office 365 items of each folders.


Why O365 Admins Must Have 4n6 Office 365 Backup Tool?

cons of retention policy

Cons of Office 365 Retention Policy

Although there are several disadvantages to the Office 365 retention policy, the most important is for organizations that have multiple accounts and large amounts of mailbox data. Also, this policy makes it difficult to find any specific item because the Office 365 retention policy automatically permanently deletes data 30 days after the item is deleted.

backup plan

Create a Backup Plan for Tragedies

Tragedy, like Rackspace's, can come in any number of forms. If you thought that tragedy couldn't strike Microsoft's servers, you're thinking wrong. Tragedy can strike anyone, anywhere, even if it's a Microsoft-owned server. If by chance some tragedy strikes and you do not have a 4n6 Office 365 Backup Tool, you will lose your data. That's why all Microsoft 365 admin users must have the Microsoft 365 Email Backup Tool.

storage full

Office 365 Mailbox Storage is Full

Office 365 account provides mailboxes in three ways to its users. The first is the shared mailbox, the second is the primary mailbox, and the third is the in-place archive mailbox. If you have a primary or shared mailbox, then you get only 50 GB of storage space in your MS Office 365 account. If your storage is full then you have to delete your important emails, if you do not want to delete then you should use Best Office 365 backup software.

prevent data

Secure Microsoft 365 Critical Data

It is very important for any user to protect their important information or Office 365 mailbox email from cyber attacks or data loss situations. Because time is unpredictable, if you have a backup of your Office 365 mailbox, you will be able to recover your data from that backup if such a situation does happen to you.

add multiple o365 account in Office 365 backup tool

Manage Multiple M365 Accounts in Single Go

If you have multiple email accounts of Microsoft 365 email clients and you want to back up the mailboxes of all those accounts in one go with the help of Best Office 365 backup tool. With the help of the O365 backup Software, any user can also take a backup of all their mailboxes with the help of their Office 365 admin account. This software supports all mailboxes in Office 365 whether it is shared, primary, or in place archived Office 365 mailboxes. With the help of this tool, the user can take a backup of any mailbox in just a few clicks. 4n6 Company has made backing up an Office 365 account as easy as copying and pasting a file from one folder to another.

 office 365 backup tool advance filters

Apply Advanced Filters to Backup Office 365 Mailbox

Best Office 365 Backup Tool also provides you with some advanced filter options to take a backup of your Microsoft 365 mailbox, with the help of which you can get your accurate data. You can apply filters with the help of date range, subject, email address, file name, etc. options and get the specific data you want.

  • Date Range: With the help of this option, you can also take backup of the specified date from the entire mailbox.
  • Subject: In this option, users can also fund data according to the subject of the email in their Office 365 mailbox.
  • Email Address: If you want to backup specific email addresses from the entire O365 mailbox, you can do so by entering the email address in the To, Cc, and From columns.
  • Include Email Header: If you select this option, the email header information will be included in your result file. If you leave this option unchecked, your result file will not include email header information.

Office 365 Mailbox Items

Which Office 365 Mailbox Items are Backed Up With Microsoft O365 Backup Tool?

Office 365 Backup Software is an expert-recommended solution that many users rely on for their O365 mailbox backup process. This software enables you to back up Office 365 mailbox emails as well as other Office 365 items. We have mentioned below the list of Office 365 mailbox items that this tool supports:

backup office 365 data with all attributes using 4n6 office 365 backup tool

Office 365 Emails With Attachments

The user can back up all the emails in his Office 365 account with their attachments whether emails are in the inbox folder, in the sent folder, in the outbox folder, or in any other folder.

Contacts or Address Book

This Office 365 Backup Tool can also backup the address book along with all information like Address (both home and work), Contact Number, Email ID, other information, etc.

Calendar With All Entries

This Microsoft 365 Mailbox Backup Tool can also backup the Calendar along with all information like important dates, Meeting Reminders, Events, Venues, Appointments, Categories, etc.

Backup Archive Office 365 Group Mailboxes

This Best Office 365 Backup Tool allows for taking backups of Office 365 Group mailboxes. This is very helpful for users of Office 365 who are working in a group.

Backup Microsoft 365 Shared Mailboxes

This O365 backup software is the most advanced and capable of taking backup of Microsoft 365 shared mailbox. Office 365 admins can easily take backups of shared mailboxes of Office 365 accounts using this tool.

Backup In Place Archive Office 365 Mailbox

Users can take backups of their in-place archive Office 365 mailboxes very easily with the help of this utility. This page also provides the answer to "How to backup an In-Place Archive Office 365 mailbox".

Mailbox Items in M365 Account

Main Features

Advance Features of Microsoft Office 365 Backup Tool

complete mailbox

Complete Microsoft 365 Mailbox Backup

With the help of the Best Office 365 Backup Tool, users can easily back up their Microsoft Office 365 mailbox data to their local system. This software thoroughly checks that all the items in the mailbox such as emails, contacts, calendars, task notes, etc. have been fully backed up without losing any of these contents during the backup process. Even though you take offline backups of your Office 365 cloud data with the help of this software, this utility ultimately maintains the formatting and folder hierarchy of your data.

all types of mailbox

Backup All Types of Office 365 Mailboxes

With the help of this 4n6 Office 365 Backup Software, users can take a backup of any mailbox in their Office 365 whether it is a shared mailbox, primary mailbox, or in-place archive mailbox.

  • Primary Mailbox: This software allows you to back up your user account and the administrator account of the primary mailbox of MS Office 365.
  • Shared Mailbox: With the help of this M365 backup tool, the user can also take a backup of the shared mailbox of his Office 365 account. You don't need to take any additional steps to back up a shared mailbox, just configure it in the software the same way you usually configure your Office 365 shared mailbox anywhere.
office 365 emails with attachments

Download Office 365 Emails With Attachments

With the help of the Best Office 365 Backup Tool, users can take backup of their Office 365 mailboxes along with attachments. And this software also provides the user with the option to extract attachments, with the help of which the user can also save attachments from his Outlook 365 mailbox. If you want to extract only email addresses from Office 365 mailboxes, you still need to click on the Extract button and select the option containing email addresses only.

multiple platform in office 365 mailbox backup tool

Backup Office 365 Mailbox to Multiple Platforms

It is an all-in-one best Office 365 backup Software that lets you back up your Office 365 mailboxes in many different formats and directly to other email accounts. If you want to Download Office 365 Mailbox to PST, MBOX, PDF, HTML, TXT, EML, and CSV then with the help of this software you can do it in different file formats. If you want to Migrate Office 365 Mailbox to Exchange server, Gmail, G Suite, Zoho Mail,, iCloud, Yahoo, or IMAP email clients directly, you can do it very easily.

file naming option in office 365 backup tool

Select Different File Naming Options

With this Microsoft Office 365 Backup Tool, you can choose the name of your resulting file. This option is available to the user when the user backs up his Office 365 emails in one email file formats like EML, PDF, HTML, etc. You can choose these options on various criteria:

  • Subject
  • From + Subject
  • From + Date + Subject
  • Year + Month + Day + Hour + Min +Sec + Subject
  • Message + Autolncrements
  • Custom Naming
destination path

Choose Desired Path for Resultant File

Usually, for most of the file formats in which users take backups of their Office 365 mailbox, they want to save that file format by selecting the path in their system as per their wish. But whenever you select an exporting file format in the software, by default the desktop is selected, but many users do not want to save their result file on the desktop, so this software provides the option to select the destination path. If you want to select the desired location, then you just have to click on the browse button and select the path for your result file.


Office 365 Data Preview Before Backup

Due to the fact that it provides a throughout preview of the Microsoft 365 account data, the Office 365 Backup Tool for Windows is the finest option for forensics investigators. This application was designed to provide users with an in-depth look at everything about an Office 365 Mail account. By using this program, you will be able to preview Office 365 emails as well as message headers, hex view, and other properties. Therefore, you may make use of this fantastic tool in the event that you want a preview of your Office 365 data.

selective data

Backup Microsoft 365 Selective Mailbox Data

If you want to back up a specific folder of your Office 365 mailbox data, you can do that too. For this, after selecting the export option, on the right side of the software panel, you will be shown all the folders of your mailbox, out of which folder you want to back up, select that folder and unselect the rest. After that, the software will back up only those folders that you have selected.

customized 4n6 Office 365 mailbox backup tool as per your need

Buy Customized O365 Backup Tools

If you want to get some special customization done in this Microsoft Office 365 Backup Software, you can also get it done. For that, you have to contact the 4n6 support team which will guide you and provide you with customizations in the software as per your wish. Our support team is open for you 24 hours and 7 days, for that you just have to contact our support team by clicking on the given live chat button or you can also contact us on our official support email


Backup Office 365 Tenant to Another Tenant

If you have taken Microsoft 365 tenant service from any hosting company and now you have to migrate to Office 365 tenant of another hosting company, then you can do it with the help of this Best Office 365 Backup Tool. With the help of this software, you can complete this migration process very easily. If you want to migrate Office 365 from tenant to tenant then use this Best Office 365 backup software.

preserve data

Preserve Data Integrity During Backup Process

This Office 365 Backup Tool is a reliable way to backup Microsoft Office 365 mailbox while still preserving the accuracy of the data. This O365 Backup Software saves the following information: To, Cc, Bcc, From, Time, Year, Signature, Attachments, Date, Body, Headings, Subject, Hyperlinks, Labels, Inline Images, Text Formatting, News Letters, Read Unread, Status, and everything else.

windows compatible

Office 365 Backup Tool for Windows

Microsoft 365 Backup Software is completely Windows-based. You can easily download and operate this powerful utility on Windows 11, 10, and other editions. Also, we ensure you that this app will give you an accurate results. When you start creating backup of your Office 365 account, the Office 365 Backup Software maintains all the properties.

Software Requirements

Best O365 Mailbox Backup Software Specifications

Software Download

Size : 45.13 MB

Version : 3.9

Trial Limitations

Best Microsoft 365 Backup Tool free demo edition allows you to backup 10 messages from each folders.

System Specifications

Hard Disk Space
131.1 MB of free hard disk space

Minimum 2 GB RAM

Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz Processor

Supported Editions

  • Microsoft Windows – Windows OS 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2019, 2016, 2012 R2, 2008

Electronic Delivery

The product delivery is automatic. You will receive an email with the link to download the product and the activation key within a few minutes after the payment has been confirmed.

Software Screenshots

Office 365 Backup Tool's Step-by-Step Procedure

download office 365 mailbox backup tool
add account option
add office 365 account
exporting option

Supported Plans

Office 365 Compatible Plans to Backup Office 365 Mailbox

office 365 plan 1
Exchange Online Plan 1

plan 2
Exchange Online Plan 2

premium plan
Exchange Online Plan Premium

enterprise e5 license
Office 365 Enterprise E5

m365 enterprise E1
Office 365 Enterprise E1

enterprise e3 plan
Office 365 Enterprise E3

office 365 F1
Office 365 F1

o365 F1 subscription
Office 365 A1

M365 A3 subscription
Office 365 A3

subscription o365 A5 Plan
Office 365 A5


Microsoft 365 Backup Tool - Video Tutorials


Office 365 Mailbox Backup Tool - Frequently Asked Questions

Follow these steps to backup Office 365 mailbox:

  • Step 1: Download and Run the Software.
  • Step 2: Add O365 Account Using Add Account Option.
  • Step 3: Preview M365 Mailbox Data on Software GUI.
  • Step 4: Click Export & Select Exporting Options.
  • Step 5: Finally, click the Save button.

Yes, with this app, you can easily backup Microsoft Office 365 mailbox data into another account.

No, with this program, you can create a complete Office 365 mailbox backup without facing any type of hassle.

The Software comes up with free demo version feature. You can use the freeware to test the working and features of this software.


See What Our Clients Have To Say