Complete Step-by-Step Guide for SysInfo Microsoft 365 Tenant to Tenant Migration Tool Easily back up Microsoft 365 Mailboxes to PST, and Mailboxes, SharePoint, and OneDrive data to another tenant. For any issues, refer to the Functional & Technical Documentation (FTD) Guide for complete assistance.
Download and install the SysInfo Microsoft 365 Migration Tool on your OS. Run it as an administrator.
Tap the Copy Mailboxes from the center panel of the opening window to get started.
Next, choose your Source Tenant Mode:
With Modern Auth, click Choose an Account Connection and pick an existing account (if any) or tap Add Connection. You will be redirected to the browser.
On the browser, select or enter your Microsoft 365 Admin ID and click Next.
Afterward, enter your Admin account Password and click the Sign In button to authenticate your account.
Once you tap Sign In, a window with Microsoft permissions consent for the Microsoft 365 Migrator appears on the screen. Scroll till the end and click Accept to grant them or Cancel to disapprove and step.
Now, in the opened interface, you can:
Also, view the selected mailboxes count at the bottom and click Convert to PST to proceed.
In the new window, you can review the selected mailboxes and enter a Parent Folder Name for the resultant file. If left empty, the file will be saved by timestamp as a name.
To choose the destination path where you want to save your resultant PST, tap Browse and pick a folder. Click Open to select.
Scrolling down, you can check and verify the Export details and opt to Skip Previously Migrated Data to prevent redundancy. Click Apply Filters to customize data with other smart options before migration.
This Date Range filter allows you to export emails from a specific time period instead of the entire mailbox.
It will ensure that only emails within the selected dates will be converted to PST. If left empty, all emails will be exported.
Other filters that you can apply are:
Note: When the PST reaches the defined size, this tool automatically creates a new file. It is recommended for better compatibility with older Outlook versions and to prevent corruption.
Enable Duplicate Removal allows you to clear the clutter to avoid redundancy. You can activate duplicate filtering and choose the Match Criteria Options: Subject, From, To, CC & Body. Emails matching the selected criteria are considered duplicates and excluded from export.
Once done, tap Apply & Continue. It applies the selected filter settings and proceeds to the next step of the Mailbox to PST conversion process.
Back to the previous window, click Start Conversion from the button to begin the process.
Further, the Active Tasks window starts where you can view the real-time progress of the bulk PST conversion. It shows total mails, migrated, skipped, failed items, and elapsed time. If needed, you can halt the conversion process anytime using the Stop Conversion button.
If you stop conversion, a message appears at the top with two options to proceed. Either you can go Back to Users, or you can choose to View Partial Files (if any converted) in between.
The All Reports section gives a complete overview of all migration and backup activities. Here, tap View Reports in Email Backup Reports to check the status after the process finishes.
Verify the complete summary of total conversions, items processed, converted, skipped, and failed. It also displays the total size processed and the detailed status of each PST conversion task, like session ID, start and completion date and time, duration, success rate, and source file path. You can delete the record if required.
Download, install, and run the SysInfo Microsoft 365 Migrator as an administrator.
Tap Copy Mailboxes from the center panel to get started with the first step of data migration.
Earlier, we chose Modern Auth login while converting to PST. Here, we pick Admin Impersonation for the login. Tap Use Saved Credentials to log in with an already existing account (if any). Or else, enter your Client ID, Client Secret Key, Tenant ID, and tap Connect and Verify.
Further, in the opened interface,
In fact, view the selected mailboxes count at the bottom and tap Continue to select the destination to proceed.
Pick Modern Auth and tap Choose an Account Creation. Select the existing mailbox ID or click Add Destination Connection to pick another account.
The next window displays all the source users you selected earlier. It also displays their folder count and migration status. Review the users and tap Continue to Mailbox Mapping to proceed.
The map mailbox window opens, where source mailboxes must be mapped to destination mailboxes before continuing. You can see the Destination Tenant name.
You can expand the Destination Mailbox drop-down to choose the target Microsoft 365 account for your source mailbox. Ensure you map at least one mailbox to proceed with the migration. Once the destination mailboxes are set, the status changes from Not Mapped → Mapped.
Next, in the same window, under what would you like to include in your copy, pick items to transfer. Refine and control what to include among (emails, contacts, and events).
Tap this option, and a new window opens where you can manage the Duplicate Email Detection settings. It helps you identify and remove duplicate emails on the basis of Subject, Body, To Recipient, From Sender, and CC Recipients. Hit Apply Filters to save.
Moving ahead, the panel asks where you would like to migrate the emails. You can pick either of these options:
Opt for “Skip previously migrated emails” to ignore emails that have already been migrated in earlier sessions, aka incremental migration. Move only new or unprocessed emails, preventing duplication and saving migration time and bandwidth.
Tap Start Migration to initiate the transfer according to the chosen mailbox and copy settings. The tool automates the process of transferring selected data to the destination account in real time.
In the next window, you can check the progress of your mailbox migration. It displays:
If required, you can halt the progress in between with the Stop Migration button.
You can browse to the Active Tasks window and check the migration process separately. Tap View Details to return to the above page for complete information.
The All Reports section gives a complete overview of all migration and backup activities. Here, tap View Reports in Email Migration Reports to check the status (Stopped/Running/Finished).
This screen shows the Mail Migration Reports dashboard, providing a summary of the entire migration process in real time.
