Email Migration: Google Workspace and Microsoft 365

Can You Migrate Our Emails to or from Google Workspace or Microsoft 365?

Yes. We migrate businesses from Google Workspace to Microsoft 365, from Microsoft 365 to Google Workspace, and from older hosted or on-premises email to either one, with careful planning so your team keeps working while the move happens.

Email migrations have a reputation for going sideways: missing messages, broken calendars and a week of confused staff. Done well, they're close to invisible, and your team shows up on Monday to find everything where it should be. That's the goal, and a repeatable process is how we work toward it. Whether you're leaving Gmail for Outlook, moving the other way or consolidating email after a merger, we handle the full migration.

What we move

A proper migration covers more than the inbox:

  • Email, including sent items, drafts and archived folders.
  • Contacts, including shared address books and distribution lists.
  • Calendars, including recurring events, attendees and meeting details.
  • Tasks and notes, where the source platform supports them.
  • Shared mailboxes and aliases, not only individual accounts.
  • Folder structure, so the person who has filed everything carefully for ten years keeps that work.

We also update and test your DNS records (MX, SPF, DKIM and DMARC) so mail is delivered correctly once you go live.

How the migration works

  1. Discovery and planning. We review the source environment: number of mailboxes, total data, shared resources and any retention or litigation holds. This is where surprises get caught early, instead of late on migration night.
  2. Optional cleanup. A migration is a good moment to clear out old mail. It shortens the move and gives everyone a cleaner start.
  3. Pilot. We migrate a small group first and confirm everything landed correctly before moving the rest of the organization.
  4. Bulk migration and delta sync. The heavy lifting happens in the background while staff keep using the current system. Close to cutover, we sync anything new so the gap stays small.
  5. Cutover. We switch mail routing to the new platform, usually outside business hours, and keep a close watch on mail flow afterward.
  6. Verification. We confirm mail flow, calendar access, mobile sync and shared resources, and we fix anything that's off before the project is closed.

Platforms we work with

  • Microsoft 365 (Exchange Online), including moves from older on-premises Exchange servers.
  • Google Workspace (Gmail).
  • Hosted Exchange from third-party hosting providers.
  • IMAP-based systems, such as older hosting setups or custom mail servers.

That covers the full round trip: Microsoft to Google, Google to Microsoft, or either one from an older system.

Compliance and data security during migration

This matters most for healthcare and financial services clients. Data is encrypted in transit during the migration, and depending on your obligations we also confirm:

  • Healthcare: a Business Associate Agreement (BAA) is in place with the new platform before any patient data moves. Not every Google Workspace edition is covered by Google's BAA, so we check the edition as well. See what a BAA is.
  • Financial services: retention and archiving settings carry over correctly and your archiving system keeps capturing mail through the cutover. Advisers and broker-dealers have specific books-and-records requirements for email.
  • Everyone: SPF, DKIM and DMARC are configured on the new platform, which helps deliverability and reduces exposure to business email compromise. Multi-factor authentication should be on from day one.

How long does it take?

It depends on mailbox count, data volume and complexity. As a rough guide for typical environments:

  • Small offices (about 5 to 15 users): often a few days.
  • Mid-size organizations (about 15 to 75 users): often one to two weeks.
  • Larger or more complex environments: scoped individually.

We confirm the timeline during planning. Planning is where most of the risk gets removed, and rushing it to save a day is one of the more common ways migrations go wrong.

Will we lose email access during the move?

The process is designed to keep disruption to a minimum. Staff keep sending and receiving on the old system during the bulk migration, and cutover is usually scheduled early in the morning or over a weekend. While DNS changes spread across the internet, some messages can be briefly delayed. We plan for that and brief your team ahead of time, so nobody worries about a missing meeting invite.

Should we choose Google Workspace or Microsoft 365?

If you haven't decided, we'll compare the two against how your team actually works. We support both, and we'll give you a straight recommendation for a business like yours. If Microsoft 365 is where you're leaning, our Microsoft 365 support page shows how we look after it day to day. Migrations are also a natural part of our managed IT services.

Migrations go smoothest when planning starts early. If you're considering a switch, or you've decided and need someone to run it, get in touch.


Talk to NerdSquad

Already a client? Call (239) 465-0079 or submit a ticket. If something is down, call so we can start right away.

Not a client yet? NerdSquad Managed IT Services is a Managed Service Provider (MSP) based in Naples, Florida. We support businesses onsite across Southwest Florida and remotely nationwide. Book a discovery call or call (239) 465-0079.

Related: Microsoft 365 support