Introduction to Google Workspace to Office 365 Migrator Software
MacSonik G Suite Migration Tool is designed to help organisations move their business data out of Google Workspace and into Microsoft 365 in a smooth and controlled way. It's ideal for IT teams, big enterprises, managed service providers and consultants looking to move users from G Suite or Google Workspace over to Microsoft 365. It even lets you authenticate those source accounts securely, choose which users and data you need, apply migration filters and keep track of how everything's going with detailed reports.
Our solution is for anyone looking to switch from G Suite to Microsoft 365 from big businesses to small ones, or even individuals migrating their stuff. IT administrators can get all the users migrated over in one go, and keep everything colour coded and all the rest so it keeps your data organised.
For organizations planning a complete platform transition, the tool can help reduce manual migration work and simplify the movement of business-critical Google Workspace data into Microsoft 365.
Top Reasons to Choose G Suite To O365 Migration Tool
| Essential Features | How It Helps Enterprises |
|---|---|
| Bulk User Migration | Process multiple Google Workspace accounts in a single migration workflow. |
| Secure Authentication | When planning a big migration, use OAuth 2.0 and Domain-Wide Delegation where you can. |
| Mailbox Structure Preservation | Preserve all the folder organisation, labels, attachments, timestamps, and the rest of it. |
| Advanced Filters | Select data using date, folder, mailbox, and other supported filtering options. |
| Incremental/Skip Migration | Process newly added or modified data after an initial migration to reduce repeated processing. |
| Duplicate Detection | Identify and skip duplicate emails, Drive to keep the destination environment organized. |
| Detailed Reports | Review processed, skipped, failed and completed migration items. |
| Enterprise Scalability | Designed for large organizations, admins, and MSP environments. |
| Secure Data Transfer | Uses secure authentication and encrypted communication for data movement. |
| Flexible Migration Control | Select users, data types, filters, and migration settings according to project requirements. |
Detailed Inventory of Migratable Google Workspace to Microsoft 365 Migration Tool
MacSonik supports migration scenarios involving several core Google Workspace data types.
Google Mailboxes & Gmail Attachments
Migrate all your Gmail data from inbox, sent, drafts, starred, spam, snoozed, and all those custom labels you use while keeping the email organisation more or less intact. Transfer all that stuff you've got attached to your emails without changing a thing - no matter what file format it is.
Free Up Space
Remove successfully backed-up emails from the source mailbox to free up storage space.
Move to Bin/Trash: Moves processed emails to Trash, allowing recovery if needed.
Permanently deletes processed emails (won't go to Trash, may not be recoverable).
Gmail Labels
To help keep the organization after you migrate, keep supported labels in Gmail.
Contacts, Calendars & Keeps
Migrate all your contacts, meetings, calendar items, Keeps and reminders to Microsoft 365.
Google Drive
Move supported Google Drive files and folders while retaining folder hierarchy and relevant metadata where supported.
Shared Drives
Transfer all your collaborative business content stored in Shared Drives if you need to.
Google Docs, Sheets & Slides
Google-native documents can be converted into corresponding MS Office formats during supported migration workflows.
Google Chat
Supported Google Chat migration scenarios can include messages, conversations, spaces, direct chats, attachments, timestamps, and other supported chat information.
Platform Features: Enterprise Google Workspace to M365 Migration Tool
Bulk User Migration
Migrate all the Google Workspace accounts at once instead of having to process each one individually which is super useful for big enterprise wide migrations, business takeovers and Microsoft 365 rollouts.
User Mapping
Map source Google Workspace accounts to their corresponding Microsoft 365 destination accounts. (Source: user@company-gsuite.com & Destination: user@company365.com) User mapping simplifies large migrations by eliminating manual destination mailbox configuration.
Preserve Folder and Structure
Preserve supported Gmail folders, labels, mailbox organization and other structural information during migration to make it easier for users to navigate the destination environment.
Preserve Gmail Metadata
The migration process preserves important email properties such as timestamps, attachments, MIME content, labels and mailbox structures where supported.
Advanced Date Filter
Just move the data you need for a specific period of time. For instance: 01/01/2023 → 31/12/2025 This can assist organizations to reduce the amount of migration in case the historical data does not need to be migrated to the new environment.
Folder and Mailbox Filters
Select specific mailboxes, folders, or supported data categories instead of migrating an entire account.
Attachment Migration
Transfer supported email attachments with their associated messages.
Duplicate Detection
Identify duplicate Gmails, Drive and skip repeated items to help maintain a cleaner Microsoft 365 destination mailbox.
Incremental/Delta Migration
After the initial migration, process new or changed data rather than migrating the entire mailbox again. This can be useful when an organization is migrating to Microsoft 365 in phases but keeps Google Workspace alive.
Detailed Migration Reports
Create activity reports about migration status, processed items, skipped data, failed operations, timestamps, etc. These reports help IT teams manage large migration projects and find accounts that need more attention.
Advanced Migration Capabilities
The Google Workspace to M365 migration tool offers all the advanced migration features you need to manage large Google Workspace to Microsoft 365 migrations. The tool supports optimized processing scenarios for Google Drive, Google Chat and Google Mailbox migration.
Google Chat to Microsoft Teams Migration
Migrate supported Google Chat conversations and collaboration data to Microsoft Teams while maintaining the available message and conversation information. The migration process supports different destination scenarios based on the source conversation structure.
- Google Chat to Microsoft Teams: Move supported Google Chat conversations to Microsoft Teams.
- DM to Channel: Convert Google Chat direct message conversations supported to Microsoft Teams channels with or without mapping when needed by the migration configuration.
- DM to DM: Migrate supported Google Chat direct messages to the respective Microsoft Teams direct message conversations.
- Message and Conversation Data: Transfer supported messages, timestamps, attachments and other available conversation information.
Gmail to Microsoft 365 Mailbox Migration
The migration tool lets you migrate Gmail to Microsoft 365 in different ways:
- Gmail to Primary Mailbox: Move all your Gmail stuff to your Microsoft 365 main mailbox.
- Gmail to Shared Mailbox: Move all your Gmail data to a Microsoft 365 shared mailbox.
- Multiple Users at Once: Migrate multiple Gmail accounts one after the other to the correct Microsoft 365 mailbox.
- Map Source Gmail Account to Destination Mailbox: Define your Gmail account and which Microsoft 365 mailbox you want it to go to before starting the migration.
Chunking Process for Google Drive Migration
For really big Google Drive files, we use a chunking approach to handle it all in smaller pieces. That way you can get the migration done quicker, and still handle those massive files without having to process the whole thing in one go.
Parallel Processing
The tool supports parallel processing to improve migration efficiency when handling multiple users and supported data simultaneously. Instead of processing every migration task sequentially, multiple supported operations can be processed concurrently, helping reduce the overall migration time for large-scale projects.
Parallel processing can be particularly useful for enterprise migrations involving multiple Google Workspace accounts, Drive data, mailboxes, and collaboration data.
Designed for Enterprise Migration Projects
MacSonik G Suite to Office 365 Migration Tool is suitable for organizations where email and collaboration data must be moved with minimal administrative overhead.
Enterprise IT Teams
Migrate employee mailboxes and business data during Microsoft 365 adoption or platform modernization projects.
Managed Service Providers
Manage migration projects across multiple customer environments with bulk processing, user mapping, filters, and detailed reports.
Mergers & Acquisitions
Move user data when organizations consolidate domains, email systems, or collaboration platforms.
Domain Migration
Transfer data when an organization changes its business domain or restructures its Microsoft 365 environment.
Google Workspace to Microsoft 365 Transition
Move users from Google Workspace to Microsoft 365 while keeping business-critical email and supported data accessible.
Real-World Migration Scenarios & Deployments
Google Workspace → Microsoft 365
Move business mailboxes and supported Workspace data into Microsoft 365.
Domain-to-Domain Migration
Migrate users from an existing Google Workspace domain to corresponding Microsoft 365 accounts.
Organization-Wide Migration
Process multiple user accounts through bulk migration rather than handling each mailbox individually.
Phased Migration
Perform an initial migration and later use incremental processing to capture newer data before the final cutover.
Merger & Acquisition Migration
Consolidate user accounts and business data when companies combine their IT environments.
MSP Migration Projects
Handle migration requirements for multiple organizations while maintaining separate user and project mappings.
How Google Workspace to O365 Migration Tool Works?
Connect & Authenticate
Launch MacSonik tool and select Google Workspace as the source. Authenticate the source environment using the supported authentication method.
Connect Microsoft 365
Provide the required Microsoft 365 destination details and authorize the necessary Microsoft Graph permissions.
Select Data
Choose the required mailboxes and supported data types for migration.
Map Users
Create or import the source-to-destination user mapping.
Apply Migration Filters
Use date, folder, mailbox, and other available filters to control which data is migrated.
Start Migration
Begin the migration and monitor processing progress from the application.
Google Workspace Data Mapping
| Google Workspace Data | Microsoft 365 Destination | Migration Notes |
|---|---|---|
| Gmail Mailbox | Microsoft 365 Mailbox | Email structure and supported metadata preserved |
| Gmail Attachments | Microsoft 365 Mailbox | Migrated with associated messages |
| Gmail Labels | Mail Folders/Supported Mapping | Mapping depends on destination structure |
| Contacts | Microsoft 365 Contacts | Supported contact information transferred |
| Calendars | Microsoft 365 Calendar | Events and recurring meetings supported |
| Google Drive | OneDrive/SharePoint library | Supported files and folders can be migrated |
| Shared Drives | OneDrive/SharePoint library | Destination structure depends on migration configuration |
| Google Docs | Word | Exported as .docx where supported |
| Google Sheets | Excel | Exported as .xlsx where supported |
| Google Slides | PowerPoint | Exported as .pptx where supported |
| Google Chat | Microsoft Teams | Mapping depends on supported APIs and destination capabilities |
Planning to Migrate Only Your Contacts? Read our guide to migrate G Suite contacts to Office 365 for a detailed step-by-step approach.
Universal System Specification for Mac/Windows
Trial Limitations
The trial version of MacSonik Google Workspace to Microsoft 365 Migration Tool lets users test the tool before buying. All output formats and features are accessible in the demo, with a limit of 500 emails per folder.
Software Requirement
Storage: 1 GB free disk space
Ram: 4 GB minimum (8 GB recommended)
Processor: Apple Silicon M1, M2, M3, M4, M5 and newer Apple Silicon processors
MacOS Version: High Sierra, Big Sur, Monterey, Ventura, Sonoma+
Requirements & Supported Versions For Mac
Version: 26.08
Size: 358 MB
Release Date: August 2026
License Tyes: Home, Administrator, Technician, and Enterprise
Software Requirement
Storage: 1 GB free disk space
Ram: 4 GB minimum (8 GB recommended)
Processor: Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz
Window Version: Win 11, Win 10, Win 8.1, Win 8, Win 7 Server 2022, Server 2019, Server 2016
Requirements & Supported Versions For Window
Version: 26.08
Size: 296 MB
Release Date: August 2026
License Tyes: Home, Administrator, Technician, and Enterprise
Why Upgrade? Free Trial vs. Paid Version Breakdown
Choose the edition that best suits your backup requirements. The trial version allows you to evaluate the software's functionality, while the full version unlocks complete backup capabilities for Google Workspace environments.
| Product Features | Trial Version | Full Version |
|---|---|---|
| Backup Gmail Emails | 500 mails/folder | Unlimited |
| Backup Google Drive Data | Upto 20 MB | Unlimited |
| Backup Contacts & Calendars | 100 items | Unlimited |
| Backup Google Chats | First 50 messages per Spaces and DM | Unlimited |
| Export to Multiple File Formats | ||
| Bulk User Backup | ||
| Incremental Backup | ||
| Advanced Filters | ||
| Split Large PST Files | ||
| Remove Duplicate Emails | ||
| Detailed Backup Reports | ||
| 24/7 Technical Support | ||
| Download and Purchase | Download | Buy Now |
Enterprise Migration Best Practices
- Start With a Pilot Group: Migrate a small group of representative users before beginning the organization-wide migration.
- Validate User Mapping: Check every source-to-destination account mapping before starting the full migration.
- Run an Initial Migration: Transfer the bulk of historical data first.
- Keep Google Workspace Active During Cutover: If business operations require continued use of Google Workspace, perform an incremental migration before the final Microsoft 365 cutover.
- Validate the Destination: Compare mailbox counts, attachments, folders, calendars, contacts, and other supported data after migration.
- Review Migration Reports: Use reports to identify skipped or failed items and determine whether additional processing is required.
- Plan for API Limits: Google Workspace and Microsoft 365 APIs impose service limits and throttling. Migration speed can therefore vary depending on mailbox size, number of users, network bandwidth, API limits, and system resources.
Real-Life Enterprise Migration Scenario
Moving 500+ User Accounts from Google Workspace to Microsoft 365
A growing organization with more than 500 employees decided to move from Google Workspace to Microsoft 365 to consolidate its productivity and collaboration environment. The IT team needed to migrate employee Gmail mailboxes while retaining important email organization, attachments, labels, contacts, calendars, and supported business data.
The migration team used a phased approach:
- Authenticated the Google Workspace environment using OAuth 2.0.
- Prepared source-to-destination user mappings.
- Started with a controlled pilot group.
- Applied date and mailbox filters where required.
- Migrated the bulk of historical data.
- Reviewed migration reports for skipped and failed items.
- Performed an incremental migration before the final cutover.
- Validated the Microsoft 365 mailboxes before switching users completely.
This type of staged approach can help enterprise IT teams reduce migration risk while maintaining greater control over a large-scale Google Workspace to Microsoft 365 transition.
Frequently Asked Questions
Ans: For domain‑wide backups, yes. You usually need a Google Workspace admin account to authorize the tool and enable domain‑wide delegation so it can back up all users automatically. For single‑user backups, individual user credentials are enough.
Ans: Yes. G Suite to Office 365 migration lets you:
- Back up selected users or OUs
- Filter by date range, labels/folders, or file types
- Include/exclude Shared Drives or specific Drive folders
This helps control storage usage and backup time.
Ans: User mapping connects each Google Workspace source account with the correct Microsoft 365/Office 365 destination mailbox. For example, john@company.com in Google Workspace can be mapped to john@company.com or john.smith@company.onmicrosoft.com in Office 365. Mapping files are commonly used to transfer source identities to their respective target accounts.
Ans: Gmail labels are generally created as folders in the destination Office 365 mailbox. Standard folders such as Inbox, Sent, Drafts, and Trash are mapped to their corresponding Outlook folders where possible.
Ans: If Drive migration is included, a user’s My Drive content can be mapped to that user’s OneDrive account. Shared Drive content may be mapped to SharePoint Online document libraries or Microsoft Teams-connected sites, depending on the selected destination
Ans: No. A throttling response is normally temporary. The tool should pause, wait for the recommended period, and retry the affected operation automatically.
Ans: Google APIs can return a 429 Too Many Requests response. Depending on the API, a rate-limit issue may also appear as a 403 rateLimitExceeded error. The tool should treat these responses as temporary and retry later.
Ans: You need an active Google Workspace source domain, a Microsoft 365 tenant, active and licensed destination mailboxes, admin access to both environments, and a valid source-to-destination user mapping list. Google API access must also be configured for the data types being migrated
Your G Suite To O365 Migration Tool, Under Control
Moving from Google Workspace to Microsoft 365 is more than transferring emails. Enterprise migration projects require careful planning around user accounts, mailbox structure, attachments, calendars, contacts, Drive data, permissions, API access, and final validation.
MacSonik Migration Tool brings these migration requirements into a structured workflow with bulk processing, secure authentication, user mapping, advanced filters, incremental migration, duplicate detection, and detailed reports.
Start with a controlled pilot, validate the results, and then scale the migration across your organization.
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