Guide

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When to Use the Exchange Online to Office 365 Migration

Microsoft 365 Tenant to Tenant Migration

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While performing a merger or acquisition or internal tenant consolidation, moving mailbox data from one Microsoft 365 tenant to another directly, will be necessary; doing it via staging it on PST is just additional work. The tool will do this in one process, maintaining the folder structure and metadata.

Business Continuity and Disaster Recovery

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Ransomware attacks, system failure, accidental deletion, and corrupt databases can expose mailbox data. During an Exchange to Office 365 hybrid migration, Outlook-based extraction becomes inefficient for multiple mailboxes. Aryson speeds migration by processing folders concurrently, filtering duplicates, and supporting bulk CSV-based mailbox imports.

Public Folder to Shared Mailbox Transition

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Organizations moving away from the legacy public folder model toward mailbox-based collaboration require that folder data be restructured into shared mailbox format. The tool's cross-type mapping capability routes Public Folder source data to Shared Mailbox targets during job configuration, supporting this transition without intermediate reformatting.

Key Features of the Aryson Exchange Online to Office 365 Migration

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Cross-Type Mailbox Mapping

Primary Mailbox, Online Archive, Public Folder, and Shared Mailbox categories can be mapped to any target category without output restrictions during job configuration.

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Dual Authentication Protocols

OAuth 2.0 (Modern Authentication) is used for single-mailbox authentication. Microsoft Entra ID Client ID/Secret is required for enterprise deployments and supports Shared Mailbox backup exclusively.

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Incremental Migration

This tool uses incremental migration, ensuring that only new or changed items are migrated during the second attempt after the initial migration run, avoiding duplicate data transfers.

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Preserves Mailbox Integrity

Maintains the original folder hierarchy, metadata, attachments, and email formatting throughout the migration process, ensuring consistent data organization and easy access after migration.

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Concurrent Folder Processing

Migrates data from up to 3 folders simultaneously, helping reduce overall migration time and improving processing efficiency for large-scale mailbox transfers.

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Selective Mailbox Folder Migration

Preview the complete mailbox folder hierarchy, then choose the specific folders to migrate while maintaining the original folder hierarchy and ensuring organized access to migrated mailbox data.

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Date-Based Migration

The software includes a date-range filter that lets you choose mailbox items that fall within a date range you specify, making it easier to migrate only the required data.

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Mailbox Item Selection

The mailbox items include emails, attachments, contacts, calendars, notes, and tasks. Select items you want to migrate based on your specific requirements and destination mailbox needs.

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Flexible Migration Destinations

You can either move to another Office 365 tenant or use an Exchange Public Folder to PST migration as per your specific business requirements and data needs.

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Exclude Empty Folders

Skip empty folders during migration to transfer only folders that contain mailbox data, keeping the destination environment clean and organized.

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Free Up Server Space

Delete the emails from the source account after a successful migration. It helps reduce the storage space for further operations.

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Multi-Environment Exchange Support

Supports mailbox migration across Exchange Online, on-premises, and hybrid environments, ideal for Exchange to Office 365 hybrid migration scenarios.

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Custom Folder Naming

Define folder names according to your organizational requirements during the migration process. It helps easily identify and maintain the migrated mailbox items.

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Multiple Mailbox Migration

Migrates primary mailboxes, public folders, online archives, and shared mailboxes (shared mailboxes are available only with client ID & secret authentication).

How Does the Aryson Exchange Online to Office 365 Migration Work?

Step 01: Select the Backup Source

Choose Office 365 as the source account. Migrate Exchange Online mailboxes, emails, contacts, calendars, notes, tasks, shared mailboxes, public folders, and online archives.

Step 02: Authenticate Your Office 365 Account

Integrate your Office 365 environment either through Single User OAuth for individual mailbox backups or Client ID and Secret authentication for corporate environments and multiple mailbox backups.

Step 03: Configure Backup Settings
Select the mailbox type, map users, choose folders, configure the backup destination, and apply the backup filters such as duplicate removal, date range, and custom folder naming.
Step 03: Start & Monitor the Migration
Start the migration and monitor real-time status with complete preservation of mailbox hierarchy, attachments, and metadata. Click All reports to verify the migration process.

Aryson Exchange Online to Office 365 Migration: Software Specification

Software Download

(Windows)

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Size: 167 MBVersion: 26.8 (Updated on 03 Aug 2026)

System Requirements

Hard Disk Space: 1 GB of free hard disk space required.

Processor: Intel® Core™ 2 Duo CPU E4600 @ 2.40 GHz or higher.

RAM: 4 GB of RAM (8 GB is recommended).

Supported Platforms

Windows OS: Windows 7, 8, 8.1, 10 (32-bit & 64-bit), Windows 11 (64-bit), and Windows Server 2008, 2012 R2, and 2016.

FAQ

Request For Software Customization

Note: If you need to customize Aryson Software or need additional specific features, then provide this software customization.
Request Quote

Pricing

Demo Version

$0
  • Migrate 500 emails per folder
  • Backup 100 items per category, including contacts, calendars, notes, and tasks.
Download

Full Version

$49 / 25 user accounts
  • Unlimited email migration
  • Unlimited contacts, calendars, notes, and tasks migration
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Product-Related Article

How can I migrate Exchange on-prem to online migration?

Companies using outdated or on-premises Exchange systems may need to move public folder data to Microsoft 365 for easier access and collaboration. The on-premises Exchange Public Folders to Microsoft 365 Migration involves preparing the source Exchange system, followed by the Microsoft 365 environment.

How to transfer public folder data to Microsoft 365 shared mailboxes?

You can migrate public folders to shared mailboxes by mapping the source public folders to the target shared mailboxes and migrating the desired email information while preserving the folder structure. This technique will assist organizations in moving away from public folders to shared mailboxes.

Frequently Asked Questions

Ans. Yes. Aryson maintains the original folder hierarchy and mailbox organization during the migration process.

Ans. The multi-threaded backup engine of the tool can process up to 3 folders concurrently, helping improve backup performance for large mailbox datasets.

Ans. Yes. The software supports bulk mailbox backup through CSV-based user import and user mapping, allowing administrators to configure multiple mailboxes in a single operation.

Ans. The tool provides a real-time activity status that allows administrators to monitor migration progress, view processed items, and track the status of the ongoing migration.

Ans. It supports many Exchange deployment models, which include on-premises Exchange Server and Exchange Online, as well as hybrid Exchange deployments.

Ans. Enable the Skip Migrated filter of the tool, which excludes the items that are already migrated in the previous pass and only exports new or modified data.

Ans. Yes. The Include Items filter can be used to select the mailbox items that you want to migrate. Tick the contact and calendar checkbox to migrate only these two.

Ans. Below are the advanced filters that are available in the tool:

  • Date Range Filter
  • Free Up Server Space
  • Custom Folder Name
  • Remove Duplicates
  • Skip Migrated
  • Split PST by Size
  • Include Items
  • Map to Default Folders
  • Exclude Empty Folders

Ans. Yes. The tool lets administrators browse the complete mailbox folder hierarchy and select only the required folders for migration, helping avoid unnecessary data transfer while retaining the selected folder structure.

Ans. OAuth 2.0 for single-user account migration and client ID/secret for migrating multiple mailboxes are the authentication protocols that are used by the software for a safe and secure process without saving any credentials

Ans.Migration time depends on several parameters, including the size of the mailbox, the number of mailboxes, the total volume of data, the speed of the network, the number of folders, and the chosen migration options. The tool’s multi-threaded processing helps improve overall migration efficiency.

Ans. Exchange migrations can be performed using Aryson, including Exchange Online to other Microsoft 365 tenants and Microsoft 365 mailbox data to PST. The software also supports migrations of primary mailboxes, online archives, public folders, and shared mailboxes with selective folder migration and mailbox mapping capabilities.

Ans. Aryson offers 24×7 support via live chat so that the user is able to receive help with any queries regarding product, installation, and configuration

Ans. Yes. The software offers a trial version for learning how the software works before purchasing the paid version. The migration tool migrates 500 emails per folder and 100 items per category, such as calendars, contacts, notes, and tasks, in the trial version.

Customer Experiences

Explore real-world experiences of businesses using Aryson for secure Microsoft 365 mailbox migration.

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