Zimbra to Office 365

Export, Convert, Migrate Unlimited Zimbra Mails, Calendar, Contact, Recurring Calendar, Briefcase to Exchange Online OWA Account

  • Supports direct transfer of Zimbra Desktop/webmail data to O365 account.
  • Quickly migrate Zimbra mails to Office 365 with Attachments.
  • Move Zimbra user contacts, distribution lists, calendar, briefcase and other folders to Exchange Online.
  • Installation and Configuration of Zimbra Desktop application is not necessary.
  • Advance Preview option to view Zimbra data file content before actual migration.
  • Software now updated to support migration of Zimbra data from Extracted TGZ files.Newly Added Feature
  • Retains folder structure and email formatting properties throughout the process.
  • Batch Migrate Zimbra to Office 365 account in seconds without data loss.
  • Supports efficient migration of recurring calendar dataNewly Added Feature
  • Various Advance filters are provided to support selective data migration
  • Capable of implementing unlimited process with 100% efficiency and accuracy.
  • Close File(s) option is provided to close added TGZ files Newly Added Feature
  • Save Report option is supported to save conversion process as a record Newly Added Feature

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Zimbra to Office 365 Converter is now updated with 20.0 Version. Check Out What's New is coming to you!

Directly Export Zimbra TGZ Data into Office 365 Account

The Zimbra to Office 365 Converter tool can perform migration process with all Zimbra TGZ data and migrate them into the desired account of the MS Outlook 365 / Microsoft 365 application directly. Users need to enter all required log in details of the Office 365 account so that the tool can safely transfer complete selected Zimbra TGZ files.

After the selection of the TGZ Zip file, the tool will provide you a new window that contains the complete list of loaded Zimbra items. Through the same section of the user-friendly software, you can view the details of folders and files, then you can deselect non required files.

Export Multiple Zimbra User Profiles to Office 365 Account

With Zimbra to O365 utility, you can easily move unlimited Zimbra mailboxes to Office 365 account, by selecting or deselecting the “I am Admin” option :

  • I am Admin (Selected): This option enables admins to export their organizations’ employees database from Zimbra environment to Office 365 environment, in single go. You just need to provide your O365 admin credentials and select the intended user account into which you want to import TGZ files. The software will then perform the remaining task, as specified.
  • I am Admin (Not Selected): This option enables transferring of multiple TGZ files to an Office 365 account in batch mode. All the files will be exported to the chosen Office 365 account.

Complete Zimbra Mailbox Items Migration

Zimbra to Office 365 Converter is a smartly designed utility that provides complete conversion of entire Zimbra mailbox data into O365 account. Now you can easily move your Zimbra emails, contacts, calendars, notes, tasks briefcase and other items directly into OWA account. Besides this, you also get the option to migrate only selected items folders for performing selective folders migration.

Complete Zimbra User Account Data Migration with CubexSoft Zimbra to O365 Tool


Email Messages

Zimbra to O365 Converter Tool supports migration of all emails with exact metadata properties. Moreover, the read and unread status of emails also remain preserved throughout the process.

Mail Attachment

Email attachments such as document, image and files will be exported by the tool.

Category & Priority

The software keeps the Category and Priority intact and safe throughout thee migration process

Mail Folder

The hierarchy structure of Zimbra mailbox folder will remain in original form after execution process

Date Filter

Easily migrate Zimbra mailbox to Office 365 account according to specified time and date range.



Recurring/Scheduled Appointments are converted with complete and exact details including Start & End Date, Category, Subject, Location etc.

Calendar Attachments

Documents, Files, Cloud attached files such as OneDrive link will be transferred with exact associated event/appointment to Office 365 account.


Provides functionality of migrating the settings of appointment reminder.


Easily move tasks from Zimbra to Office 365 such as Start Date, Due Date, End Date, Priority Reminder etc.

Task File Attachments

Migrate any file type or document that is attached with task.



The software retains complete details such as Email Address, Home Address, Work Address, Location, Mobile Number and other information of single contact.

Benefits & Features to Convert Zimbra to Office 365

Trustworthy Software Functions to Instantly Export Zimbra TGZ to Office 365

Batch TGZ to Office 365 Migration in Seconds

Zimbra Converter Tool provides remarkable functionality that assists in easing the migration task and facilitates to convert unlimited Zimbra data at once. With the help of batch mode function, one can migrate multiple Zimbra files to Office 365 in batch. Just keep all TGZ files in a single folder, load the same on the software panel and move all of them to Exchange Online account at one time.

Complete Zimbra Mailbox to Office 365 Migration

Zimbra TGZ to O365 Tool is a powerful solution when it comes to file migration. It not only move Zimbra mails to another server but also provides support to migrate Zimbra email files alongwith contacts, calendar, notes, recurring calendars, briefcase and many more in one go. Also, software will take care of all the attached files and related images during migration.

Preserves Folder Structure & Email Components

All the email properties like email header details, bcc, cc, hyperlinks, images, formatting, font style, subject etc. will be well maintained after conversion. Once the Zimbra to Office 365 migration process completes, you will see that the entire data will be in an exact form. Moreover, Zimbra to Exchange Online Migration Tool keeps the folder structure intact as it is throughout the process.

Preview Function to Analyse Zimbra Data File

Zimbra TGZ to Office 365 Tool supports Preview facility. It means that you can load Zimbra TGZ file and check its entire content by utilizing Preview pane. For example if you want to check the preview of email file, by using this functionality, you can analyse the selected email file, its formatting properties, images and other details before starting the actual migration process.

Migrate Zimbra Folder without TGZ File Extraction

Zimbra to Office 365 Tool provides two options i.e. Add Files and Add Folders. These are prvided so that you can load TGZ file of Zimbra on the software panel for conversion. Once you click the required file to load it on the application, the tool will then instantly perform the extraction process and displays all its folder items on the left software screen.

Supports all Zimbra and Windows OS Editions

The Zimbra TGZ to Office 365 Tool supports all editions of Zimbra Desktop, Zimbra Server and Zimbra Web Mail. additionally, you can quickly install Zimbra to O365 Tool on any Windows OS such as Win 10, 8.1, 8, 7, XP etc. and effortlessly migrate Zimbra to Outlook Web App without any trouble.

Migrate Zimbra TGZ Extracted Folders

Sometimes it happens that users have extracted their data from Zimbra TGZ files for viewing purpose and accidently deleted the TGZ file. But now they need to migrate this data to Office 365 account. Since the extracted data cannot be moved back to TGZ file it seems to be an impossible task. But now now, as the Zimbra to O365 Converter has this "Add Extracted TGZ Folder" option that enables them to migrate extracted Zimbra folders data to O365, with accurate data.

Automatically Opens Conversion Report

Once the conversion process is completed, Zimbra TGZ to Office 365 Migration Tool will show the entire migration status report in a Notepad window. The report contains detailed information like Start Date and Time, Saving Time, Source File Path, No. of Items Converted, Destination Path etc. If you want, you can save this report in TXT file, for future use.

Supports Close File(s) option to Delete Loaded Zimbra Files

After loading TGZ files successfully on the application, you can delete the loaded files using Close File(s) option. This option is beneficial, when you have accidently loaded some wrong TGZ file and need to perform the migration process with some other TGZ file.

Move Zimbra Account Data to Outlook.com/Hot Mail

The Zimbra to Office 365 Migration Tool enables users to directly batch convert .tgz files to Exchange Online, Outlook Web Access, Live.com, Outlook.com. You just need to enter the desired credentials in the required boxes and software will quickly move the TGZ files to selected Cloud Apps' user account.

Migrate Selective Data using Various Filters

The software provides a range of advanced Mail filters to help users migrate only required data from Zimbra to O365. Moreover, its date range filter is also beneficial that enables users to export mails and other data occured between the specified date range.

Easy to Use

Zimbra to Office 365 Converter is a handy utility that enables both technical and non-technical users to use it effortlessly. Now all users can easily migrate their Zimbra mailboxes to O365 account, without any training and support.

Procedural Screenshots of Zimbra to Office 365

CubexSoft Zimbra TGZ to Office 365 Tool is built-up to import Zimbra user account data, emails, briefcase, contacts and calendars to Office 365. Below are a some of the software screenshots that will make you understand the step by step process for Zimbra to O365 migration.

Zimbra to Office 365 Free Download Migration Utility

Know all the specification to Download & Use the App with Ease

Software Name: Zimbra to Office 365 Converter
Free Download:

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Version: 20.0
Processor: Minimum 2.4 GHz Processor
RAM: Minimum 512 MB
Minimum Hard Drive Space: 46.4 MB
Operating System: Windows OS: Windows 10, 8.1, 8, 7, Vista, XP, Windows Server 2019, 2016, 2012, 2008, 2003, etc.
Demo Version: Download Zimbra to Office 365 Free Edition that facilitates to convert first 25 files from each Zimbra folder to Office 365 account free of cost. The Zimbra to O365 Migration software is very effective migration utility which carries all remarkable functions and allows to check its functioning first before implementing the actual process with license key.
Installation & Un-installation for Windows: Guide Install/Uninstall EULA

Frequently Asked Questions

Commonly Asked User's Queries

You just need to follow some user-oriented steps of this utility:

  • Step 1 –: Download and Install the Zimbra to Office 365 Migration Tool on Windows Operating System.
  • Step 2 –: Open the tool and then Select the TGZ Zip file or extracted Zimbra Files/Folder.
  • Step 3 –: Now, Preview section provides complete view of all loaded files and folders.
  • Step 4 –: Choose the MS Office 365 application from Export Type Section of the Tool.
  • Step 5 –: Enter all the required credentials to login the account of Office 365 / Microsoft 365 application
  • Step 6 –: Click Export and wait for the completion of the process.

The tool offers many benefits to users, which makes it different from other conversion utilities. Some of them are discussed below:

  • It carries batch migration functionality which supports unlimited Zimbra mail to O365 migration at once.
  • Preview option provides brief view of Zimbra mail content such as To, Cc, Bcc, From, message body, hyperlinks, images etc.
  • Maintains Folder hierarchy throughout the conversion process.
  • DIY interface supports easy utilization by all technical and non-technical users.
  • Capable to export entire Zimbra mailbox data to OWA including email messages, mail folders, contacts, calendars, recurring calendars, briefcase etc.
  • Suitable for all Zimbra and Windows versions.

Yes, without any confusion, you can directly export Zimbra briefcase folder to Exchange Online without any trouble.

Yes, you can easily export Zimbra contacts to Outlook Web App with this tool. Simply open the application >> load TGZ file >> select contact folder >> click Export >> click on Office 365>> Enter login details >> Choose desired categories and filters >> click Convert.

Yes, you can use the Zimbra to Office 365 application on any Windows OS version. It supports all the earlier and latest versions of Windows operating system.

To know the step by step process of extracting TGZ file from Zimbra, visit: https://www.cubexsoft.com/guide/export-tgz-in-zimbra.html

Some of the common reasons are mentioned below that describes why one wants to migrate from Zimbra to O365:-

  • Enrollment is the first condition for Zimbra Account users.
  • Zimbra takes a lot of time in responding.
  • And the last but not the least reason is Zimbra synchronization process, which is very slow.

Zimbra Desktop and O365 are different email applications with quite similar functionalities. Zimbra Desktop is a popular Desktop based email client, designed by Zimbra Inc. It is a part of Zimbra Collaboration Suite (ZCS). It offers two editions, one is open-source which free to access and another one is commercialized that supports Network Edition. On the other hand, Office 365 is a popular cloud service, by Microsoft, that provides many apps and other functionalities to users.

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