Overview
Shared mailboxes are commonly used for team collaboration, support queues, and departmental email addresses. Cloudiway provides dedicated tools for migrating shared mailboxes between Office 365 tenants and handling the differences in Google Workspace's approach to shared mailbox functionality.
What Gets Migrated
- All emails and folders
- Calendar items (if applicable)
- Contacts
- Mailbox permissions and delegates
- Send-As and Send-on-Behalf permissions
Office 365 Shared Mailboxes
Cloudiway's migration tool includes a dedicated shared mailbox migration list for transferring shared mailboxes between Office 365 tenants. The setup process mirrors standard mailbox migration.
Setup Steps
- Access the Mail Migration section in your project
- Locate the Shared Mailboxes section
- Use the Manage dropdown to populate the migration table:
- CSV import for bulk additions
- Manual entry for individual mailboxes
Automated Detection
The Get List option automatically identifies shared mailboxes in your source environment. You'll need to configure:
Source and Target Connectors
Select the Office 365 connectors for your source and target tenants.
Target Mailbox Type
Choose the type of mailbox to create in the target:
- Shared - Standard shared mailbox (recommended)
- Standard - Regular user mailbox
- Archive - Archive mailbox
Target Email Address Format
Define how target email addresses are constructed using matching rules and target domain.
Domain Considerations
Migration Process
- Populate your shared mailbox migration list using automated detection or CSV import
- Review and verify the source-to-target mappings
- Select the mailboxes to migrate
- Choose Pre-Processing to create target shared mailboxes automatically, or skip if targets already exist
- Click Start to begin the migration
- Monitor progress in the dashboard
- Run delta passes for incremental synchronization
Pre-Processing Creates
- The shared mailbox in the target tenant
- Required permissions
- Email aliases based on your configuration
Google Workspace Shared Mailboxes
Google Workspace handles shared mailbox functionality differently than Office 365. There is no direct "shared mailbox" object type in Google.
Google Groups Collaborative Inbox
Google Groups with Collaborative Inbox enabled function similarly to shared mailboxes. These require special handling during migration.
Delegated User Mailboxes
User mailboxes with delegated access are migrated through the standard user migration list with delegation permissions preserved.
Migration Path
Best Practices
Run a discovery to identify all shared mailboxes and their sizes before planning migration windows.
Export and document existing permissions before migration for verification afterward.
Migrate user mailboxes before shared mailboxes to ensure permission assignments work correctly.
Migrate a few shared mailboxes first to verify permissions and access work as expected.