I moved 120 Zimbra mailboxes using CSV import option and MFA sign in. Every mailbox had gone to the right account.Batch CSV → Microsoft 365
MichaelUnited States
Verified PurchasezMigratorv26.8
Zimbra to Office 365 Migration Tool
Built for IT admins to migrate Zimbra mailboxes, contacts & calendars to Microsoft 365 in bulk, with folder mapping, delta sync, and scheduled migration.
- Modern Authentication (OAuth 2.0): Verified software is fully compatible with MFA (Multi-Factor Authentication); admins do not need to enter the password in the software interface.
- Graph API Data Transfer: This modern Zimbra to Microsoft 365 migration tool directly transfers Zimbra data using the Microsoft Graph API without depending on IMAP-based methods.
Free demoWindows 11, 10, 8, 7No Zimbra install needed
Why Choose zMigrator for Zimbra to Office 365 Migration?
Easy-to-use software to migrate Zimbra to Office 365 with full Zimbra TGZ preview availability before migration.
Easy-to-Use Software
Verified software designed for do-it-yourself Zimbra to M365 migration comes with a self-explanatory user interface. Users do not need any technical expertise to run the software.
Free 24x7 Product Support
zMigrator comes with 24x7 live support to resolve user queries if they get stuck during the Zimbra to Microsoft 365 migration.
Preview Zimbra TGZ Data Before Migrating to O365
This tool allows users to load Zimbra TGZ data for preview before selecting folders for the Zimbra to Office 365 migration.
Zimbra to Office 365 Migration Software with Default Folder Mapping
Zimbra Default Folders Mapped to Matching Office 365 Folders
The enterprise software uses default folder mapping to place migrated data into the matching default folders in Office 365, based on the Zimbra environment. The utility automatically moves Zimbra inbox emails directly into the respective Office 365 inbox folder.
Zimbra Mail Migration to Office 365 with Delta Mode
The Utility Migrates Only New or Changed Data
The Zimbra to Office 365 migration software transfers data incrementally using delta mode. The software migrates only new or changed data generated since the last migration cycle. This incremental process completely prevents data duplication in the target Microsoft 365 account.
Zimbra to Microsoft 365 Migration Tool with Scheduler Feature
Administrators configure a task in the scheduler, and zMigrator runs the migration automatically
The zMigrator software for Zimbra to Office 365 migration comes with a built-in scheduler. Administrators create tasks and configure the time, date, and frequency to automate the Zimbra to Microsoft 365 migration in batches. IT professionals enable, disable, delete, and analyze log reports for individual tasks directly from the dashboard.
Zimbra to Office 365 Migration Tool – Core Features & Uses
Everything IT admins need to plan, run and verify a large-scale Zimbra to Microsoft 365 migration.
Admin Mode
For large-scale Zimbra to Office 365 migrations across organizations, the software utilizes a dedicated Admin mode. It migrates data from multiple Zimbra accounts to Office 365 in a single run. Administrators authenticate the entire migration batch simultaneously, eliminating the need to process Zimbra and Office 365 accounts one by one.
Selective Migration Filters
IT admins apply date range, sender, recipient, subject, and folder name filters to isolate the required information. This targeted approach accelerates the Zimbra to O365 migration process and explicitly excludes unwanted directories, including WhiteList and BlackList folders.
Fast Mode with Concurrent Migration
The tool accelerates data transfers by moving multiple Zimbra items to Microsoft 365 at once. With 1 to 16 concurrent items migrating at a time, IT teams can speed up batch and bulk Zimbra to O365 migration.
Custom Root Folder
Create a separate destination folder in the Microsoft 365 account, such as Migrated, to keep the Zimbra data apart from the existing Office 365 account data.
Detailed Migration Logs
The auto migration log report generator creates log reports in two modes: one complete saving log, and a user-wise log when migrating multiple Zimbra users to Office 365.
Import & Export Settings
To keep your filter settings consistent for every run during batch migration, the software exports and imports them in a settings file. Administrators reuse these files instead of setting up everything again.
Zimbra to Microsoft 365 Migration Software: Supported Data Types
zMigrator moves the complete Zimbra mailbox to Microsoft 365, not just emails.
zMigrator moves all eight Zimbra data types to Microsoft 365 in one run. Every item keeps its structure and properties at the destination, from TGZ files or a cloud-hosted server.
- 1Emails
- 2Attachments
- 3Contacts
- 4Calendars
- 5Tasks
- 6Notes
- 7Briefcase Documents
- 8Folder Structure
Zimbra to Office 365 Migration Tool Pricing
Compare the free demo with the full version of zMigrator before you buy.
| Features | DEMO Version | FULL Version |
|---|---|---|
| Migrates Zimbra Emails | Yes | Yes |
| Migrates Zimbra Calendars | Yes | Yes |
| Migrates Zimbra Contacts | Yes | Yes |
| Migrates Zimbra Tasks / Notes | Yes | Yes |
| Maintains Data Integrity | Yes | Yes |
| Migrates Zimbra Briefcase Documents | Yes | Yes |
| Convert Zimbra Attachments & Images | Yes | Yes |
| Batch Zimbra Migration | No | Yes |
| Unlimited* Conversion | No | Yes |
| Cost | FREE | USD 1499 |
| Get started | Try it now | Purchase now |
zMigrator for Zimbra to Microsoft 365 – System Requirements
Check supported Windows editions, hardware needs and demo limits before you install.
Tech Specification
Operating System Supported
Windows 11, 10, 8.1, 8, 7, Vista, XP and all older editions (32-bit & 64-bit)
Windows Server 2019, 2016, 2012
Hardware Requirements
Processor: Minimum Intel® Core™ i5-1235U Processor (2.4 GHz Processor Recommended)
RAM: Minimum 4 GB
Hard drive space: 200 MB minimum
Demo Edition
Current Version
zMigrator v26.8
Trial Limitations
Exports only 25 items from each Zimbra mailbox folder.
Opening and viewing TGZ emails has no limit.
Migrate Zimbra to Office 365 – Watch Demo Video
See how zMigrator moves Zimbra mailboxes to Microsoft 365 in five easy steps.
Migrate Zimbra to Office 365 – Step-by-Step Guide
Follow the five steps below. The screen on the right changes with each step.
Using Google instead of Microsoft? See the Zimbra to Google Workspace migration guide.
Zimbra to Microsoft 365 Migration – Prerequisites Checklist
Complete this checklist before you start so the migration runs without interruptions.
Windows system with zMigrator installed
Install the tool on a supported Windows PC or Server edition that meets the hardware requirements.
Zimbra Source Data Ready
Administrators keep the source Zimbra TGZ file or extracted folders ready for migrating to the Office 365 account.
Microsoft 365 Admin Account
Administrators require Office 365 admin account credentials for users migrating the complete Zimbra server to the Office 365 platform.
Destination Mailboxes Created
Administrators create the destination email accounts in Office 365 for transferring account-wise Zimbra data to Microsoft 365.
CSV File for Batch Migration
For users migrating from Zimbra cloud-hosted to M365 in batch, users keep the CSV file for all destination accounts with passwords and email addresses ready.
Stable Internet and Free Disk Space
For a smooth and uninterrupted migration process, administrators maintain a stable, high-speed internet connection with recommended free disk space.
Zimbra to Office 365 Migration Tool – Customer Reviews
Verified purchase reviews from zMigrator customers.
After testing the free demo version and purchasing the software, the delta migration of new messages only on the second run avoided duplicates in weekend cutover.Delta Migration → Office 365
SophieUnited Kingdom
Verified PurchaseAll Zimbra TGZ backups were imported to Office 365 retaining folders, calendars, contacts and log reports made verification easier.TGZ → Office 365
ArjunIndia
Verified PurchaseCommonly Asked User Questions
Quick answers about migrating Zimbra to Office 365 with zMigrator.
Which Microsoft 365 permissions and roles do I need to run the Zimbra to Microsoft 365 migration?
Answer:
Complete Zimbra server to Office 365 migrations require admin account credentials. Individual user migrations require permission from the admin to complete the migration job.
What data or properties are not migrated by zMigrator during the Zimbra to O365 migration?
Answer:
For Zimbra TGZ to Office 365 migration, the software completes the migration. However, for users migrating from Zimbra cloud-hosted to M365, the software migrates the email data with attachments and folder structure.
Can I migrate Zimbra data to Office 365 archive mailboxes, shared mailboxes or public folders?
Answer:
The zMigrator software uses the Graph API for Zimbra to Microsoft 365 migrations. Therefore, the tool migrates Zimbra data to Office 365 shared mailboxes or public folders, but not to archive mailboxes, as Microsoft provides no parameter for them in the Graph API.
How long does Zimbra to M365 migration take, and how does zMigrator handle Microsoft 365 throttling?
Answer:
The speed of the migration depends on three major parameters: your internet speed, Zimbra server speed, and Microsoft 365 server speed. For faster migration from Zimbra to M365, the software processes concurrent items.
What happens if some items fail during the Zimbra to Microsoft 365 migration? Can I re-run only the failed ones?
Answer:
For failed items, the software generates a saving log report. Users can reattempt to migrate Zimbra to Microsoft 365 using filter settings or contact product support directly to fix the issue.