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Read time 10 minutes

Summary: The article discusses the impending end of support for Exchange Server 2010 and the migration options available, including Exchange 2019 and Office 365. It highlights the benefits of Office 365, such as flexibility, cost management, data security, and compliance. It also provides insights into preparing for the migration and outlines manual migration methods, including cutover, express, and hybrid migrations. Additionally, it introduces Kernel Migrator for Exchange as a third-party solution for efficient mailbox migration to Office 365.

Upon its launch, Exchange Server 2010 introduced a wealth of innovative technologies, features, and services to the Exchange ecosystem. Its primary objective was to facilitate a transformative shift in work dynamics, transitioning individuals and organizations from a communication-centric approach to one centered around collaboration. This versatile platform not only streamlined the deployment of Exchange 2010 in on-premises environments but also offered the flexibility to host select mailboxes in the cloud, thereby catering to evolving needs seamlessly.

With the looming end of support for Exchange 2010, businesses find themselves compelled to transition to a new platform. Fortunately, a range of migration options is at their disposal, including Exchange 2019, 2016, or the cloud-based Office 365.

Many businesses are considering upgrades to modern environments, with some eyeing the transition to Office 365. The question arises: Which platform best suits your needs – Exchange 2019 or Office 365? Let’s delve into this to find the ideal solution for your organization.

Instant Solution

Download Kernel Migrator for Exchange to Migrate Exchange Server 2010 data to Office/Microsoft 365 without any interruption and in quick time.

Exchange 2019 Vs. Office 365

According to Microsoft, embracing the cloud is the ideal choice if you seek features such as seamless collaboration from any location and wish to eliminate the need for an initial investment. However, for organizations bound by legal and compliance constraints that prevent them from transitioning to the cloud, Exchange 2019 presents a suitable alternative.

Choosing between these two platforms has posed a significant challenge in the past. However, there are compelling reasons that may persuade you to stick with Exchange 2019.

  • If you don’t believe in the security of cloud completely and want full control over your data
  • If you rely on logs for analysis
  • If you need instant support for any queries related mail servers
  • If you don’t want to invest in the cloud or have to maintain a budget

Why Choose Office 365 over Exchange 2019?

Office 365 offers some great benefits to its users which makes it an essential requirement for every business. Apart from SharePoint, OneDrive, and Skype platform, office 365 is embedded with some other benefits also, such as:

  • Flexibility and cost management: Office 365 provides remarkable flexibility through its diverse range of subscription plans. You have the freedom to select from a variety of subscription options that cater to your specific requirements. Moreover, Office 365 subscription plans are designed with cost-efficiency in mind, ensuring that you pay only for the services you actively utilize. A single Office 365 license grants you access to a suite of powerful tools, including SharePoint Online, Skype for Business, OneDrive, and Sway, all conveniently consolidated within a unified platform, tailored to your chosen plan’s features.
  • No risk of data loss: Office 365, supported by the reputable Microsoft, stands as a reliable choice for cloud services. With Microsoft’s robust backing, you can rest assured that your data is secure, minimizing the risk of data loss. Furthermore, Office 365 boasts impressive uptime, ensuring uninterrupted access to your critical data and services.
  • Security and Compliance: When considering the storage of data in the cloud, security stands as a paramount concern for every organization. Hence, the decision to transition to Office 365 emerges as an exceptional choice due to its extensive array of advanced security and compliance features.

Given these compelling advantages, it’s only prudent for any organization to contemplate a shift to Office 365. Nevertheless, it is imperative to gain a comprehensive understanding of specific crucial factors before embarking on the migration journey.

Preparing for Exchange 2010 Migration to Office 365

Thorough planning is a critical prerequisite before embarking on the migration journey from Exchange 2010 to Office 365. During the initial stages of this migration process, it is imperative to ask yourself pertinent questions.

  • Do you really need to move to Office 365?: Before diving into the world of Office 365, it’s essential to start with a critical self-assessment: “Is Office 365 truly the solution I need?” Take a meticulous look at the array of features that Office 365 offers, aligning them with your specific requirements. Delve deep into the primary motive behind considering migration, examining its financial feasibility and the potential advantages it brings. Additionally, perform a thorough cost analysis, comparing the pricing structure of Office 365 with the ongoing maintenance expenses associated with an on-premises Exchange environment.
  • Change your Domain Name System records: To transition from Exchange to Office 365, it’s essential to complete a DNS record verification process to confirm domain ownership. This verification is crucial for seamlessly directing your emails to the new mailboxes. Neglecting to update the DNS records may result in emails continuing to be routed to the old server.
  • Have a password policy in place: Transitioning to Office 365 mandates the implementation of a robust password policy. Once the transition is complete, users gain the flexibility to access their mailboxes from anywhere on the Internet, albeit this convenience also elevates the potential for security breaches. Fortunately, Office 365 offers multi-factor authentication, mitigating security concerns and providing peace of mind.
  • Functions that you have in your old emails: When establishing a connection with a new mailbox, you may encounter instances where certain functions such as autocomplete, file attachments, signature settings, or the reattachment of PST files seem to vanish. Nevertheless, if you possess the capability to reconfigure these features within your email server, you need not worry about their disappearance. Moreover, it is possible to migrate these functions, albeit with some additional effort involved.

After carefully evaluating these factors, it is essential to invest in comprehensive training for your employees and partners to ensure their seamless adaptation to the new work environment. Inadequate training for your workforce can lead to challenges during the initial phases of transitioning to Office 365.

Migrating to Office 365

Once you’ve completed your strategic planning for the transition from Exchange 2010 to Office 365, you’re ready to embark on the migration journey. The next question that naturally arises is: “How can I migrate from Exchange 2010 to Office 365?” Fortunately, Microsoft offers a set of manual migration methods specifically designed for this purpose. While there are typically three manual methods available for migrating Exchange to Office 365, it’s worth noting that Exchange 2010 supports only two of these approaches. Let’s delve into these manual migration methods for a closer look.

  1. Cutover or Express Migration: Cutover migration is a user-initiated process designed for migrating mailboxes to Office 365. It’s worth noting that this method is best suited for scenarios involving fewer than 2000 mailboxes. For smoother migration and optimal performance, it’s advisable to migrate no more than 150 users at a time. This approach ensures efficient mailbox transfer and minimizes potential disruptions. The Cutover migration can be seamlessly executed through the Exchange admin center, providing a user-friendly interface for managing the migration process.

    Express migration, often referred to as Minimal Hybrid, shares similarities with the Cutover migration method and is recognized as an effective approach for migrating Exchange mailboxes to Office 365. However, it should be noted that this method is relatively time-consuming, typically spanning a few weeks or less to complete the migration process. Express migration involves several sequential steps, including:

    • Verifying domain ownership
    • Beginning the Express migration process
    • Create users in Office 365 by running directory synchronization
    • Provide Office 365 licenses to the users
    • Migrate user mailbox data
    • Updating DNS records

    To know in detail, how to go to the Office 365 Admin Center.

  2. Hybrid Migration: When migrating from Exchange 2010 to Office 365, opting for a Hybrid deployment should be your primary choice. A Hybrid deployment offers the advantage of concurrently managing on-premises and online mailboxes within your organization. Nevertheless, it’s important to note that this approach is more intricate compared to the cutover or express migration methods.
    • One advantage of Hybrid migration is that it offers a hybrid environment of both on-premises Exchange and Office 365. Also, it is the only migration method that allows mailboxes to be off-boarded from Office 365 to Exchange on-premises without using third-party tools. You can perform Hybrid Migration for Exchange server if you have more than 150 and less than 2000 mailboxes.
    • But there is one drawback of using Hybrid migration, it relies on directory synchronization. And if for some reasons an organization cannot implement directory synchronization, then they’ll have to use a third-party tool or other manual methods.

    Migrating data manually can be a daunting and time-intensive task. To simplify the process and ensure a smooth transition of Exchange 2010 mailboxes to Office 365 without risking data loss, it is advisable to explore third-party solutions that offer a seamless and efficient migration experience.

Migrate Exchange 2010 to Office 365

Kernel Migrator for Exchange stands as an intricately crafted solution, purpose-built to streamline the migration of Exchange mailboxes to Office 365 with utmost speed and simplicity. This versatile software not only facilitates the seamless migration of mailboxes but also extends its capabilities to encompass the relocation of public folders. Furthermore, its pre-migration analysis feature empowers you to proactively identify and mitigate potential risks, ensuring a smooth and secure transition. Let’s delve into the operational steps that define the functionality of this indispensable tool:

Note: To migrate Exchange 2010 mailboxes to Office 365, you’ll have to create a migration job.

  1. Open the tool and select the project under “All projects” tab in the left pane, and then select “Add Job.”Create a migration job
  2. The “Add job for mailbox” wizard will appear on the screen. Select the project name and enter a job name and click “Next.”Enter a job name
  3. After adding the job type, select Exchange Server as a source to add Exchange 2010 mailboxes.Enter Source Domain
  4. Now, select the mailboxes that you want to migrate. You can also import mailboxes using a CSV file and click “Next.”Select Mailboxes
  5. After adding the source, you’ll have to select Office 365 in the target (Destination) field. Enter the required information and click “Next.”Select Office 365 in the target
  6. It allows users to set specific filters to the mailboxes. Select the filters that you want to apply and click “Next.”Select Filters
  7. Map the source Exchange mailboxes with the target Office 365 mailboxes. Click “Next.”Map Domain
  8. In Notification Settings, provide the necessary details to receive email notifications and click “Next” to proceed.Notification Settings
  9. With this tool, you can also schedule or run the migration job instantly. Click “Next” after scheduling the period for migration. Here is an example of schedule migration job.Configure Delegation
  10. After clicking “Next,” the tool will display the migration summary before starting the migration. If the summary is ok, then click “Finish” to start the migration process. Otherwise, press “Back” button to make any changes in the migration job.Start the migration process.


Migrating data from Exchange 2010 to Office 365 has become an imperative for businesses seeking more efficient data management. While manual methods can be cumbersome and less efficient for mailbox migration, opting for a third-party tool is a prudent choice. Among these solutions, one standout is acclaimed as the top Exchange Migration software for seamless and hassle-free migration.