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Exchange migration made easy: Simplify your move to the cloud
Migrating mailboxes from Exchange Server to Exchange Online is often seen as a challenging task even for experienced admins. Challenges include moving terabytes of mailbox data without slowing down the network, keeping users connected throughout migration, and avoiding mailbox access disruptions caused by even small errors. Traditionally, migrations involve using the Exchange admin center’s in-house mailbox move feature, manual PowerShell scripts, or the native command-line migration utilities provided by Microsoft. These methods require advanced expertise, are prone to errors, and can be time-consuming. That’s why many organizations turn to a reliable Exchange Online migration tool that automates the heavy lifting and provides granular control, helping admins execute the migration in a smooth manner.
Challenges of manual Exchange to Exchange Online migration
Attempting an Exchange migration without using an Exchange migration tool can actually end up making the process a tedious one.
- Extended downtime: Manually moving mailboxes to Exchange Online can take hours or even days. During this time frame, users may not be able to access their emails, calendars, or contacts, which disrupts day-to-day business operations.
- Loss of data or corruption: Transferring volumes of mailbox data manually increases the chances of missing emails, attachments, or folder structures. Even a small mistake can lead to corrupted mailbox items that can be difficult to recover.
- Complex mailbox mapping: In large organizations, mapping each on-premises mailbox to the correct Exchange Online account can get tricky. A small mismatch can result in users losing access to critical emails or having permissions applied incorrectly.
- High administrative overhead: Admins often spend hours writing and running scripts, troubleshooting errors, and manually tracking which mailboxes have been migrated. This can cause added stress to already busy teams.
- Limited visibility: Without an Exchange Online migration tool, it’s difficult to get an idea regarding the migration progress. Admins may not know which mailboxes are complete, which ones failed, or what issues occurred during the migration process.
Exchange Reporter Plus, an Exchange Online migration tool, combats these challenges with built-in mailbox mapping, real-time migration tracking, and automated user provisioning. These features help admins execute Exchange migrations without downtime or data loss.
Supported Exchange versions
ManageEngine Exchange Reporter Plus supports mailbox migration from the following Exchange Server versions, ensuring compatibility for a range of Exchange Server versions:
- Exchange Server 2019
- Exchange Server 2016
- Exchange Server 2013
Important: Migration is not supported for Exchange servers when Extended Protection is enabled. From Exchange Server 2019, Extended Protection is enabled by default, but it can be disabled.
How Exchange Online migration works with Exchange Reporter Plus
Exchange Reporter Plus helps simplify the process of Exchange migration from Exchange Server to Exchange Online by taking care of mapping, account creation, licensing, and data transfer in a single flow. When a migration schedule is configured, this Exchange migration tool solution maps each on-premises mailbox to its corresponding Exchange Online account using attributes like first name, last name, email address, or even custom AD fields. This ensures that every mailbox has a proper target before the migration process begins.
Complete visibility: You can get complete visibility over the migration process with a clear and concise status at each step.
When the migration schedule gets executed, the tool searches Exchange Online for matching users. If a match is found, the mailbox data (including emails, contacts, tasks, and the calendar) gets migrated directly, which helps keep folder structures and permissions intact. If no matching user exists, the tool automatically creates a new Exchange Online user account using details from the on-premises mailbox, assigns the appropriate license, and completes the migration.
Admins can also customize the process by applying filters to migrate specific folders or items based on a selected date range. Migrations can be scheduled during non-business hours, and the tool provides real-time status updates and logs. By automating these steps, Exchange Reporter Plus minimizes manual effort, reduces the risk of errors, and ensures a smooth transition to Exchange Online.
This streamlined approach delivers several key advantages that make Exchange migration easier:
Intelligent mailbox mapping
This Exchange Online migration tool automatically pairs on-premises mailboxes with the correct Exchange Online users using attributes such as first name, last name, display name, and email address. This ensures that no mailbox has been missed, avoiding common errors that occur with manual mapping.
Scheduled migrations
Admins can schedule migrations to run automatically during non-business hours, such as overnight or on weekends. This reduces the likelihood of downtime during peak working hours and ensures that employees are not impacted while the transition takes place.
Automated user provisioning
For mailboxes that don’t yet exist in Exchange Online, Exchange Reporter Plus creates the user accounts automatically, assigns the appropriate licenses, and completes the migration process, which helps eliminate delays caused by manual account creation.
Full visibility and monitoring
Exchange Reporter Plus provides real-time progress tracking, detailed logs, and reporting for each mailbox. Admins can quickly identify completed migrations and spot errors to take corrective actions without delay.
The tool offers two specialized reports that work together to provide end-to-end visibility:
- Migration Users: Track user-level migration status in real time during the migration process. Quickly identify which users have completed migration, which are in progress, and which may have encountered issues requiring immediate troubleshooting.
- Migration Statistics: Evaluate overall migration progress and results both during and after migration. This report provides aggregate statistics on mailbox migration for your Microsoft 365 tenant, displaying information on all users who have migrated from Exchange Server to Exchange Online.
Reduced administrative effort
By automating mapping, account creation, licensing, and data transfer, IT teams no longer need to spend hours writing scripts, tracking progress manually, or troubleshooting migration errors. This frees up time for more strategic IT initiatives.
FAQs
Yes. Exchange Reporter Plus lets you apply filters to migrate selected mailboxes or folders within a date range. This becomes a useful feature if bandwidth is limited.
Admins can review the error logs, rectify the issues, and rerun the failed job without having to restart the entire migration from square one.
Potential challenges include large mailbox sizes, custom permissions or rules, internet bandwidth, DNS delays, and third-party dependencies like journaling or archiving. Planning and using premigration checks can resolve most common issues.
Yes, editions other than the Professional edition have restrictions, including a limit of two migration schedules, a maximum of 25 selectable mailboxes, and only five items per folder in each mailbox can be migrated at a time.
Explore Exchange Reporter Plus' other features
Mailbox permissions reports
These reports provide detailed visibility into mailbox permissions and access rights, helping admins audit who can access which mailboxes and folders both before and after migration. This is crucial for verifying that permissions remain intact once mailboxes are moved to Exchange Online.
Exchange Server health monitoring reports
These reports provide insights into the health of Exchange Servers, including services, databases, and DAGs. This helps ensure that the Exchange Server environment is stable and ready for migration, and also helps with monitoring post-migration server health in hybrid configurations.
Mailbox content reports
These reports provide comprehensive details of mailbox contents, such as messages, attachments, and folder structures, allowing better data organization and compliance monitoring.
Mailbox size reports
These reports provide detailed information on mailbox storage usage and size trends over time, helping you analyze data growth within your Exchange organization.
