Kernel Migrator for Exchange & Exchange Migrator (Express Edition) – How do they differ

Kernel Migrator for Exchange and Exchange Migrator – Express Edition are two tools designed specially to perform Exchange and Office 365 migrations. Both are exceptional tools with advanced features.  However, there are a few differences which are quite evident. Let us see them more closely:

1. User Interface

The user interfaces of both the applications are entirely different. Migrator for Exchange performs migration by creating a Project. On the other hand, Exchange Migrator – Express Edition doesn’t need this. User interfaces of the two tools are:

  • The home screen of Exchange Migrator incorporates each task which is required to complete the migration process. The user needs to create a project first, and then add the jobs for each task.


  • The home screen of Exchange Migrator – Express Edition is quite direct and straightforward. As soon as the user launches the tool, he understands how to start the migration process. It has two panels, one to add a source and the other to add a destination.

2. Pre-Migration Analysis

Migrator for Exchange tool has multiple prerequisites which a user should fulfill before starting the migration, but Exchange Migrator – Express Edition tool requires only a proper mapping between the source and destination to start the migration.

  • A pre-migration analysis lets you get prior knowledge of what will happen in the migration. It collects some necessary information like network speed and number of agents involved and calculates the time required for the migration.

  • Exchange Migrator – Express Edition directly adds the source and the destination mailboxes to start the migration.

3. Filters

Filters are slightly different in these tools:

  • In Migrator for Exchange, filter(s) include message class, date-range, and folders. You can Add/Remove the filters as per need.

  • In Express edition, you can filter the mailboxes based on date-filter, item type filter, exclude deleted folder, exclude an empty folder, save hierarchy to a new folder, and set operation timeout.

4. Schedule Migration

The migration scheduling option allows you choose a convenient time to migrate Exchange mailboxes, but this feature is only available in Migrator for Exchange application.

  • While creating a job for mailbox migration, you can choose to schedule the migration job at the desired time. The migration will start automatically at the scheduled time.

  • In Exchange Migrator – Express Edition, there is no option to schedule the migration. Migration begins as soon as you complete the filter and choose to start the migration.

5. Undo Migration

The Undo Migration feature allows the user to roll back the changes of a completed migration. This feature is available in Migrator for Exchange and not in Exchange Migrator – Express Edition.

  • After a migration job completes, the user can choose to reverse the process by deleting the migrated mailboxes from the destination.


  • Exchange Migrator – Express Edition does not roll back the migration.

6. Migration Report

Both the tools provide reports with detailed information about migrated mailboxes, migrated folders, source/target details, etc.

  • There is a separate report console for Migrator for Exchange which keeps complete record of all the migration jobs. The user can open the Report Console in a web browser and check the reports.

  • In Exchange Migrator – Express Edition, the migration report is much simpler. It only informs of the status of mailbox migration. The users can save it in CSV format.

7. Outlook

Both tools require Outlook in different ways.

  • Kernel Migrator for Exchange requires a working Outlook profile, except for EDB to PST conversion. Other processes will not work in the absence of properly configured Outlook

  • Exchange Migrator – Express Edition does not require an Outlook profile for its working.


Both the tools are phenomenal and conduct Exchange migration efficiently. Exchange Migration solution is a big tool with a features for every need, whereas Exchange Migrator – Express edition is a lightweight migration tool with fewer requirements.

Kernel Migrator for Exchange Software Video Tutorial

  1. The real difference between this two software is the interface and features available. The KME has a complex interface with too many features and options whereas the Express Edition conducts just the data migration using a minimalistic approach.

  1. Thanks to this informative article related to the two major migrator tools. I have used the trial version of both the software and was brainstorming which software I should purchase. I checked this article and got a better idea related to the softwa

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