Exchange to Office 365 Migration Tool – Secure & Fast Migration

Why Choose DRS Softech Exchange to O365 Migration Tool?

Works with O365, On-Premise Exchange, and Hosted Exchange

This tool connects to Office 365, on-premise Exchange Server, and Hosted Exchange Server from the same interface. It supports User Mailbox, Public Folder, and Online Archive across all three platforms. Admin ID works for both O365 and Exchange sources. One tool handles every migration scenario without switching applications.

Full Mailbox Hierarchy Preview Before Anything Migrates

The Mailbox Hierarchy screen shows the complete folder tree for every loaded account with individual checkboxes. Select folders, deselect what is out of scope, and verify content before migration starts. Nothing moves until you click the final Backup button — giving compliance and IT teams full visibility before committing.

Separate Source and Destination Authentication

Source and destination accounts authenticate independently: O365 Login for the source, Backup Options for the destination. The tool displays a Sign In option for the Destination account. Both steps support Modern Authentication and Client ID login, preventing cross-account conflicts during tenant-to-tenant migrations.

Advanced Features of Exchange to Office 365 Migration Tool

Backup and Restore: Two Modes in One Tool

The opening screen offers Backup and Restore. Backup migrates data from Office 365, on-premise Exchange, or Hosted Exchange to any destination. Restore the PST or OST files into Office 365. Both modes use the same authentication, user selection, and filter pipeline; one tool handles both directions.

Modern Authentication and Client ID Login

The O365 Login screen offers two methods. Modern Authentication opens the Microsoft OAuth login page — works with multi-factor authentication and stores no passwords. Client ID and Secret: Use your Azure AD Application ID for service-principal access. Both options appear again at Backup Options for the destination account.

Get Sub User: CSV Import and Automatic Discovery

The User and Mailbox screen loads source accounts in two ways. Add User from CSV File imports a prepared list — a Sample CSV is available directly inside the tool. Add User automatically discovers all tenant accounts. Both methods populate the Source Mailbox User ID table with checkboxes for confirmation and source type selection.

Mailbox Hierarchy: Granular Folder and Item Selection

After user selection, the Mailbox Hierarchy screen loads the full folder tree for every account. Every folder, subfolder, and email item displays with individual checkboxes — select at the account, folder, or item level. IT teams use this to scope migrations to specific folders, departments, or data ranges.

Backup Options: Destination Format and Authentication

The Backup Options screen has a Save As dropdown with nine output formats: Office 365, G Suite, IMAP, PST, PDF, EML, MSG, MBOX, and CSV. Selecting Office 365 shows the destination authentication form. Source and destination logins are intentionally separate. You can also check the Migration From Office 365 Emails to Google Workspace solution.

Apply Filters: Six Controls on One Screen

The Apply Filters screen handles all data cleaning in one place: Remove Duplicates by To, From, Subject, or Body; Save Mail without Attachment; Free Up Server Space; Map Data with Default Folder; Date Filter with Start and End Date; and Custom Folder Name. Separate tabs apply duplicate settings to Mail, Calendar, and Contacts independently.

Map Users: Source to Destination Assignment

The Map Users step displays the final source-to-destination pairing before migration. Each source mailbox is matched to its destination user ID and mailbox type — Mailbox, Online Archive, or Public Folder. The Backup screen shows the complete mapping table with a Status field reading Migration not started yet" until Backup is clicked.

Multiple Licensing Options for Every Requirement

The Exchange to Office 365 Migration Software offers four license plans: Home, Administrator, Technician, and Enterprise, designed for individuals, small teams, IT professionals, and large organizations. Each plan includes unlimited migration, dedicated technical support, and a 30-day money-back guarantee to match every operational and budget requirement

Compatible with All Major Windows and Mac Versions

The Exchange to O365 Migration Tool runs on Windows 11, 10, 8.1, 8, and 7 in both 32-bit and 64-bit editions, including Windows Server 2008, 2012, and 2016. On Mac, it supports macOS 10.15 Catalina through macOS 15 Sequoia on Apple Silicon M1, M2, M3, and M4 processors. No Outlook installation is required on either platform.

Free Demo Version

Download the free demo version to test the complete tool before purchasing. The demo includes every feature of the licensed edition, authentication, user import, mailbox hierarchy preview, output format selection, and all filters. The only restriction is 50 emails per folder. Activate a license to remove this limit and migrate complete mailboxes without restriction.

How to Use DRS Softech Exchange to Microsoft 365 Migration Tool

Step 1: Download the tool from the official DRS Softech website. Click Backup or Restore to import PST or OST.
Step 2: Enter your Office 365 User ID or Client ID and Secret. Click Sign In.
Step 3: Import users via CSV or click Add User Automatically. Select Source and click Next.
Step 4: The tool loads the full folder tree with checkboxes. Select folders to migrate. Click Next.
Step 5: Select Office 365 as the Saving Format from the list and Sign In with credentials.
Step 6: Apply Filters and Features as per your needs, and click Next.
Step 7: Map source accounts to destination user IDs. Review the mapping table. Click Backup to start migration.

Full Guide

Step 1: Download the tool from the official DRS Softech website. Click Backup or Restore to import PST or OST.

Step 2: Enter your Office 365 User ID or Client ID and Secret. Click Sign In.

Step 3: Import users via CSV or click Add User Automatically. Select Source and click Next.

Step 4: The tool loads the full folder tree with checkboxes. Select folders to migrate. Click Next.

Step 5: Select Office 365 as the Saving Format from the list and Sign In with credentials.

Step 6: Apply Filters and Features as per your needs, and click Next.

Step 7: Map source accounts to destination user IDs. Review the mapping table. Click Backup to start migration.

Software Feature	Free Version	Full Version
Backup option: Migrate O365 to O365
Modern Authentication (OAuth 2.0) Login
Add Users from CSV File or automatically from Tenant
Source: Primary Mailbox, Online Archive, Public Folder
Full Mailbox Hierarchy Preview with Folder Selection
Migrate Emails, Contacts, Calendars, Tasks, Journals	50 Emails Per Folder	All
Export to Office 365 and other formats	50 Emails Per Folder	All
Advanced features, like Remove Duplicate, Date Filter, etc
Compatible with All Windows and Mac Versions
24×7 Technical Support
Download and Purchase	Download	Purchase

System Specification

System Requirement for Windows

Operating System:	Windows 11, 10, 8.1, 8, and 7
Processor:	Intel® Core™2 Duo E4600 Processor 2.40GHz
Version:	26.01
Size:	212 MB
RAM:	Minimum 4 GB of RAM is required (8 GB Recommended).
Hard Disk Space:	About 1 GB is needed to install the tool.
Platforms:	Windows Server 2012, Windows Server 2016, Windows 10 (x64), and Windows 11 64-bit.

System Requirement for Mac

Processor:	Mac System with Apple Silicon Processor M1, M2, M3, M4, and next-generation series
RAM:	Minimum 4 GB of RAM is required (8 GB Recommended).
Version:	26.01
Size:	218 MB
Hard Disk Space:	Around 1 GB of free space is needed for installation, and the tool requires at least 5 GB of free space to store data.
Platforms:	MacOS X 11.0 (Big Sur), MacOS X 12.0 (Monterey), MacOS X 13.0 (Ventura), MacOS X 14 (Sonoma), MacOS X 15.0 (Sequoia), MacOS (10.15 "Catalina") and above versions.

Supported Links

Software Guide

EULA

Installation/Uninstallation

Software Activation Guide

Additional Information

Q1. Why is the software not working on my Windows PC?

Ans: Follow the steps below if the software is not working properly on your PC.

Go to Windows Defender.
Click on Settings.
Turn off Real-Time Protection.

Without disabling the controlled folder access, the application cannot install some essential programs. It is because the safety feature blocks anything that tries to modify user\{user name} or various other related folders.

Q2. Why do I need to disable the Antivirus program to use the application?

Ans: The Antivirus programs block some part of our application which further hinderance the tool working. So, it is mandatory to temporarily disable the Antivirus program. To ensure proper working of the application, Enable the Allow access (Whitelist) from Antivirus setting.

Q3: Why is my backup process still getting blocked?

Ans: Disable the antivirus and Windows Defender and add the product to the exception list. The firewall and antiviruses that protect your system from malicious programs also consider our product a threat. So, you need to deactivate the security features.

Q4: Does this software support SAN, and NAS storage systems?

Ans: Yes, the tool supports SAN, and NAS storage systems provided that the file's access is transparent.

Free Trial Version for Evaluation and Analysis:

The free demo version includes all features of the licensed edition. In trial mode, only the first 50 emails per folder are migrated. Activate a license to remove this restriction and migrate complete mailboxes without any limits.

Frequently Asked Questions

What is the difference between Backup and Restore in this tool?

Backup migrates mailbox data from Office 365, on-premise Exchange, or Hosted Exchange to a destination you choose. Restore imports PST or OST files into an Office 365 mailbox. Both use the same authentication, user selection, filter, and mapping workflow; only the data direction changes.

Can I migrate from an on-premise Exchange Server, not just Office 365?

Yes. The tool connects to Office 365, on-premise Exchange Server, and Hosted Exchange Server from the same interface. Admin ID and administrative privileges are supported for both Exchange and O365 sources. No separate tool is needed for on-premise environments.

Does the tool work without Outlook installed on the machine?

Yes. No Outlook installation or Exchange client components are required on the machine running the migration. The tool connects directly to the source tenant using Modern Authentication or Client ID credentials.

Can I migrate only specific folders instead of the entire mailbox?

Yes. The Mailbox Hierarchy screen loads the complete folder tree with individual checkboxes at every level: account, folder, subfolder, and item. Tick only what you need. No data is migrated until you confirm the selection and click the final Backup button.

Will duplicate emails from years of Exchange backups appear in Office 365?

No. The Apply Filters screen of the Exchange to Office 365 Migration Tool includes duplicate removal that compares emails on the To, From, Subject, and Body fields simultaneously. Only emails matching all selected fields are removed. The filter runs before migration, so duplicates never reach the destination tenant.

Can I migrate Public Folders and Online Archive Mailboxes, not just primary mailboxes?

Yes. On the User and Mailbox screen, each source account can be individually assigned as Primary Mailbox, Online Archive, or Public Folder using a dropdown. You can run all three source types in the same migration job.

Can I migrate to Google Workspace (G Suite) instead of Office 365?

Yes. The Saves/Backup/Migrate As dropdown on the Backup Options screen includes G Suite as a destination alongside Office 365, IMAP, PST, PDF, EML, MSG, MBOX, and CSV. The same source setup and filters apply regardless of destination.

How do I migrate hundreds of users without adding them one by one?

Use the Add User from CSV File option on the User and Mailbox screen. Prepare a CSV with all user accounts: a Sample CSV template is available directly inside the tool, and import the entire list in one step. Or click Add User Automatically to let the tool discover all accounts in the connected tenant.

Can I migrate emails from a specific date range only?

Yes. The Date Filter on the Apply Filters screen lets you set a Start Date and End Date. Only emails within that window are included. Emails outside the range are skipped entirely. This is used for compliance-scoped migrations, phased rollouts, and archiving projects with defined retention periods.

Does the tool support multi-factor authentication?

Yes. Modern Authentication uses the standard Microsoft OAuth 2.0 flow, which fully supports multi-factor authentication. You sign in through the standard Microsoft login page exactly as you would in any Microsoft application. No passwords are stored by the tool at any point.

What mailbox data can the Exchange to Office 365 Migration Tool migrate?

The DRS Softech Exchange to Office 365 Migration Software can migrate complete mailbox data, including emails, contacts, calendars, tasks, journals, attachments, public folders, and online archive mailboxes. The software also preserves the original folder hierarchy, email formatting, metadata, and mailbox structure during the migration process.

Why should I choose the Exchange to Office 365 Migration Tool over manual migration methods?

Manual migration methods can be time-consuming and difficult for large mailbox migrations. The DRS Softech Exchange to Office 365 Migration Tool simplifies the process with bulk user import, automatic mailbox mapping, Modern Authentication support, and advanced migration filters for secure and accurate data transfer.

Why do enterprise teams choose the DRS Softech Migration Tool?

Enterprise teams choose the DRS Softech Exchange to O365 Migration Tool because it supports secure OAuth 2.0 authentication, bulk mailbox migration, selective mailbox transfer, and large tenant environments.

Customer Testimonials

See how IT administrators, migration consultants, and enterprise teams rely on DRS Softech Exchange to Microsoft 365 Migration Tool for accurate tenant-to-tenant and Exchange migrations.

"We migrated 180 mailboxes from an on-premise Exchange 2016 server to Office 365 over a single weekend. The Client ID authentication connected to the source Exchange environment without any issues. The Mailbox Hierarchy screen lets us confirm exactly which folders were in scope before anything moved. Monday morning, every user had their full email history in the new tenant."

- Nathan Brooks.
IT Infrastructure Director, Calloway Legal Group (USA)

"Our compliance requirement was to migrate only the last three years of email and exclude all attachments to stay within the storage quota on the new tenant. The date filter and Save Mail without Attachment option are handled both in one step on the Apply Filters screen. We did not write a single PowerShell script for the entire migration."

- Sophia Reynolds.
IT Compliance Lead, NorthRiver Financial Services (UK)

"We ran a tenant-to-tenant migration after our parent company acquisition. The CSV import on the User and Mailbox screen handled all 95 accounts in one batch. The source-to-destination user mapping table on the final Backup screen gave us a clear confirmation of every account pairing before we clicked Backup. No surprises."

- Daniel Carter
Systems Administrator, CrestPoint Group (Canada)

"The duplicate removal filter was the feature that sold our team. Our source mailboxes had years of accumulated duplicates from shared folder overlap and old backup cycles. The filter removed them before a single email reached the destination tenant. The new Office 365 mailboxes were cleaner than the originals."

- Emily Watson
IT Project Manager, Horizon Professional Services (Australia)

"I use this tool on every Exchange to Office 365 migration project I run for clients. The separate source and destination authentication steps are a practical detail that prevents the cross-account session conflicts that trip up other tools. The six-step workflow is straightforward enough that junior team members can run migrations without supervision after one walkthrough."

- Michael Turner
Senior IT Consultant, Vertex Digital Solutions (USA)

DRS Softech Exchange to Office 365 Migration Tool

Key Features of Exchange to Office 365 Migration Software