Import a PST archive into Microsoft 365, Gmail or an IMAP mailbox

You upload the PST file, point to the destination mailbox, and Loomigrate recreates the messages in the same folders. You do not need Outlook or any program on your computer, and the import can be repeated without duplicates.

Before you start

• Check that the PST file opens in Outlook without errors. A damaged file can be repaired with the scanpst.exe tool that comes with Outlook.
• If the file is password-protected, remove the password in Outlook before uploading.
• Prepare the destination mailbox and its details: address and password (an app password for Gmail, a mailbox with IMAP access enabled for Microsoft 365).
• We handle files up to 100 GB, and the price depends on the size. Larger archives are priced individually: write to info@loomigrate.com.

Import step by step in Loomigrate

1. Create an account on loomigrate.com and open the "New migration" wizard.
2. Choose "PST file" as the source system and Microsoft 365, Gmail or your own IMAP server as the destination.
3. Upload the PST file (drag it into the window) and enter the login and password of the destination mailbox.
4. Click "Test connections" to check access to the destination mailbox.
5. Start the import. Progress is live: the number of messages moved and the current folder.
6. When it finishes, open the report and compare the folder counts with what Outlook shows.

What is preserved and what to watch out for

• The folder structure is recreated in the destination mailbox, and message dates and headers stay unchanged. The inbox folder goes to the inbox, and the other folders (also "Sent" and "Deleted Items") are created under their own names.
• The import covers mail (messages with attachments). Calendars and contacts from the PST file are not imported yet.
• Messages that are already in the destination mailbox are recognized by their identifier and skipped, so a repeated import creates no duplicates.
• PST import runs in the Loomigrate cloud (not in on-premise mode) and has no free test. The uploaded file stays on our server until the project or account is deleted, and the extracted copy is deleted after every run.

What it costs

Importing one PST file costs €7 net up to 20 GB, €10 up to 50 GB and €12 up to 100 GB, regardless of the number of messages. Above 100 GB an individual quote. A task has no time limit.

Frequently asked questions