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By Christopher Williams, Google Workspace Consultant · Elite Web Professionals · Updated March 2026
Migrating to Google Workspace involves more than switching email providers. Depending on your current platform, you may be moving email archives, calendar events, contacts, files, shared mailboxes, distribution lists, and email signatures — all while keeping your team productive and your email flowing without interruption.
Google currently offers two migration paths: a newer cloud-based data migration service built into the Admin console, and classic migration tools that handle specific source platforms. Which path is right for your organization depends on where you are migrating from, how much data you have, and how complex your current environment is.
The first decision in any Workspace migration is which migration tool to use. Google provides two options.
Cloud-based data migration (Admin console) is accessible directly from the Admin console under Account > Data migration. It supports migration from Microsoft Exchange, Microsoft 365, IMAP-based email providers, and other Google Workspace accounts. This tool is the recommended starting point for most migrations.
Classic migration tools include GWMME and GWMMO. These are installed locally and connect directly to your Exchange server or Outlook data files. They are used when the cloud-based tool cannot reach the source server.
| Feature | Cloud-Based (Admin Console) | Classic Tools (GWMME/GWMMO) |
|---|---|---|
| Runs from | Admin console (browser) | Installed on local machine |
| Best for | Microsoft 365, IMAP, other Workspace | On-premise Exchange, PST files |
| Setup complexity | Low | Moderate to high |
Before starting any migration, confirm the following items are in order.
DNS access verified. You need the ability to modify DNS records for your domain. Confirm who manages your DNS and that you have login credentials.
Workspace environment provisioned. Your Google Workspace account should be created, your domain verified, and user accounts provisioned before the migration begins. See our guide on Google Workspace setup.
Source platform credentials available. The migration tool needs access to the source platform. For Microsoft 365, this typically means a global admin account.
Data inventory completed. Know how many users you are migrating, how much email data exists, and whether there are shared mailboxes or distribution lists that need to be recreated.
Team communication plan ready. Your team needs to know when the migration is happening, what to expect, and where to go for help.
A well-executed migration follows a three-phase approach: test, cutover, and delta sync.
Test migration. Before migrating all users, run a test migration on two or three accounts. This validates that the migration tool is configured correctly and that data is mapping properly.
Bulk migration. Once testing is successful, start the full migration. The cloud-based tool runs in the background while your team continues using the old platform.
DNS cutover. When the bulk migration is complete and verified, update your MX records to point to Google’s mail servers. Time this for a low-traffic period and monitor email delivery during the DNS propagation window (typically 24 to 48 hours).
Delta migration. After the MX cutover, any email that arrived at the old platform between the end of the bulk migration and the DNS switch is captured in a final sync.
After the migration and cutover are complete, verify the following.
Email delivery test. Send test emails to and from the migrated accounts using external email addresses.
Calendar verification. Confirm that historical events, recurring meetings, and shared calendars are present and accurate.
DNS record audit. Confirm that MX records point to Google, and that SPF, DKIM, and DMARC records are configured correctly.
Old platform decommission. Do not cancel your old email service until you are confident that all data has been migrated. Keep the old platform active for at least two weeks after cutover.
A Workspace migration often coincides with other infrastructure changes. When your email, domain, and DNS configuration change, it affects more than just your inbox.
Your website’s contact forms may need to be updated. Your SEO configuration — including Google Search Console verification — should be confirmed after the domain changes. If you are also updating your website design or local search presence, coordinating those projects with the migration ensures that DNS changes are handled once, correctly.
A clean migration requires planning, testing, and precise DNS timing. If you want the move done right — with zero data loss and minimal disruption — we handle the entire process.
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