Migrating From Shared SMTP to Google Workspace Without Losing Mail
Shared SMTP is cheap until deliverability, support, and compliance costs show up. Migrating to Google Workspace is straightforward if you sequence DNS and users correctly.
Pre-migration inventory
- Every domain and subdomain that sends mail
- Devices and apps using old SMTP credentials
- Forwarders, aliases, and groups
- Who owns billing and DNS
Recommended cutover order
- Provision Workspace and verify the domain (do not switch MX yet if you need parallel setup).
- Create users and optionally stage mail with dual delivery if your old host supports it.
- Publish SPF/DKIM/DMARC for Google.
- Lower old TTL on MX a day ahead, then switch MX to Google.
- Update every app’s SMTP to Workspace settings + App Passwords.
- Monitor Postmaster and support tickets for 72 hours.
Reputation reality check
A brand-new Workspace domain does not inherit miracles. Authenticate first, send to people who expect your mail, and ramp volume. Migration is a trust reset — treat it that way.
Where MailJuke helps
MailJuke shortens the painful middle: domain + Workspace + DNS authentication in one place, so migrations are a checklist instead of a scavenger hunt.