Read time 6 minutes

Summary: The article highlights the advantages of migrating from Zimbra to Office 365, citing Office 365’s comprehensive features and suitability for larger organizations. It suggests using the Kernel IMAP to Office 365 migration tool and provides a step-by-step guide for the migration process. The tool offers benefits like single and multiple mailbox migration and the use of CSV files for mailbox migration.

Zimbra and Office 365 are both prominent software solutions, with Zimbra serving as an email server and web client. However, Office 365 enjoys widespread popularity and offers a superior user experience. Migrating your Zimbra data to Office 365 is a prudent choice for several compelling reasons.

While Zimbra is undoubtedly valuable in its own right, Office 365 stands out due to its unmatched combination of accessibility, flexibility, integration capabilities, and an extensive array of features. Both Zimbra and Office 365 can be accessed from anywhere, but the level of convenience, adaptability, and feature diversity that Office 365 offers is unparalleled.

Moreover, Office 365 seamlessly integrates with other Microsoft Office applications such as Word, Excel, Publisher, OneNote, and PowerPoint. This integration provides a cohesive and efficient environment for productivity and collaboration.

Why are Users Moving from Zimbra to Office 365?

Zimbra is a streamlined email application primarily designed for basic email communication, offering a limited range of features. It could be described as a lightweight email manager rather than a comprehensive email suite. While Zimbra can serve the needs of small businesses adequately, larger organizations may find it lacking in advanced functionalities and features that are essential for their operations.

Office 365 offers a comprehensive suite of tools designed to meet the diverse needs of large enterprises. With a variety of subscription options, it provides a wide array of applications for cloud storage, networking, communication, and collaborative workspaces. Furthermore, Office 365 facilitates efficient email communication by enabling the creation of distinct mailboxes within its Admin Center.

In contrast, Zimbra lacks the robust feature set that larger organizations require, making it less suitable for their needs. Consequently, many businesses find it necessary to transition their email systems to Office 365. However, migrating emails from Zimbra to Office 365 manually can be a complex and challenging process.

To simplify this transition, professionals can opt for a specialized solution that streamlines the email migration process, ensuring a seamless shift to the new platform.

Discovering the numerous advantages of transitioning from Zimbra to Office 365 might have piqued your interest in migrating your data to the Office 365 platform. If you’re considering this transition, our comprehensive blog will guide you through the entire process, providing a step-by-step explanation.

Zimbra to Office 365 Migration with Kernel IMAP to Office 365

Kernel IMAP to Office 365 is a perfect tool to perform Zimbra to Office 365 migration. Here are the steps you need to follow to perform the successful migration. Install and run the software and start from step

  1. On the first page, you need to click Add button to add IMAP files for migration.
    Add Zimbra file
  2. In the following step, please choose your email client and provide the necessary credentials, including the Server Name, Email ID, Password, and Port Number. Don’t forget to enable the “Use SSL Connection” option. On the right-hand side, you will find the account details. To continue, simply click the Add button.
    Enter email client credentials
  3. Now, for the second step, you need to click on Add button under Step 2 to add Office 365 mailboxes.
    Add Office 365 mailboxes
  4. Please provide your email details, including your email address and password. Select “Single/Archive Mailbox” if you have a single mailbox or choose “List all Mailboxes” using the Global Administrator login details for multiple mailboxes in Office 365. In this example, we will demonstrate the setup for a Single/Archive Mailbox.
    Select Single/Archive Mailbox
  5. At this stage, you will see both the source mailbox and the destination mailbox. Select the mailbox and map them and click on Set Filter and Migrate.
    Map source and destination mailbox
  6. Please select a destination in the mailbox and then click on “Migrate.” You have three options to choose from: Mailbox, Archive Mailbox, and Public Folder. If you wish to migrate your data to a specific destination type, simply click on the corresponding button.
    Provide a destination
  7. Now on the page of filter selection, apply the desired filters and click on I am Ok, Start Migration.
    Apply filter option
  8. Wait till the process is completed and click on Ok after completion.
    Zimbra to Office 365 migration done
  9. Once all steps are executed successfully, you will get a CSV report generated right after the completion.

    CSV report generated


This blog is dedicated to the Migration of IMAP Mailbox to Office 365; the main focus is on Zimbra. The blog tells how you can migrate Zimbra to Office 365 with the help of Kernel IMAP to Office 365. There are several benefits of using Kernel IMAP to Office 365 migration tool and those are; you can migrate single and multiple mailboxes, can perform incremental mailbox migration, you can use CSV file for the mailbox migration, and much more exciting features.