How to Import OST to Office 365 Webmail?

Summary: Are you struggling to import OST to Office 365 account because it’s inaccessible? Without the linked Outlook profile, this can be a time-consuming and frustrating task. But what if you could quickly and easily import all your OST file data into Office 365 account? Yes, it’s possible! In this article, you’ll discover two simple ways to upload OST file to Office 365 mailbox. These methods will save your time and effort.

Keep reading to see how to make your OST to Office 365 migration process easier and more efficient.

An OST file is an offline copy of your mailbox data created by Microsoft Outlook when configured with an Exchange or IMAP account. It allows you to work offline and sync changes once you reconnect to the server. However, OST files are not directly importable into Office 365. This requires a conversion process to make the data usable.

Before proceeding with the methods, let’s check the importance of importing OST files into Office 365.

Why Import OST File into Office 365 Account?

• Access Data Anywhere: Office 365 is a cloud-based platform that allows you to access your emails, contacts, calendar and any other data from any device, anywhere in the world.
• Data Recovery: If your OST file is orphaned (disconnected from its Outlook account) due to server issues or account deletion, importing it into Office 365 helps recover that valuable data.
• Switching to Office 365: When migrating from an on-premises Exchange server or another email service to Office 365, you need to move your existing OST file data to ensure a smooth transition and continuity.
• Collaboration and Sharing: Office 365 makes it easy to share emails, attachments, and other mailbox items with team members. Importing OST files ensures all your data is available for collaborative work.
• Avoiding Dependence on Outlook: OST files require the original Outlook profile to work. By moving data to Office 365, you eliminate this dependency and can access your mailbox directly through the web.

How to Upload OST to Office 365 Webmail Free?

The manual method involves converting OST to PST and then importing PST file into Office 365. While this is a free method, it requires technical knowledge and Outlook access, which might not be feasible for everyone.

1. Go to File > Open & Export > Import/Export.
2. Select Export to a file and click Next.
3. Choose Outlook Data File (.pst) and click Next.
4. Select the mail account or specific folders to export.
5. Check the Include subfolders box and click Next.
6. Click Browse to select a folder and click Finish.
7. Next, use Azure AzCopy (a command-line tool) to upload the PST files to Azure storage.
8. Alternatively, copy the PST files to a BitLocker-encrypted hard drive and ship it to a Microsoft data center.
9. Microsoft will upload them to Azure Blob storage for a fee: $2/GB or $2000/1 TB.
10. Create Office 365 user accounts and assign licenses.
11. Map the PST files to the corresponding Office 365 mailboxes.
12. Assign permissions to allow importing.
13. Upload the CSV file to begin importing converted OST files into Office 365.

Note: This method only works if the Outlook profile is active and accessible. If the email profile has been deleted or the OST files belong to old or inactive accounts, this method won’t work. In that case, proceed to Method 2.

How to Migrate OST Files to Office 365 Mailbox Automatically?

Now, try the Advik OST Converter Software to transfer OST files to Office 365 mailbox directly. This software ensures a smooth transfer while preserving the original folder structure, email formatting, and attachments. Whether you need to migrate a single file or multiple OST files, this tool is a reliable solution for effortless and accurate OST to Office 365 migration. Also, it supports to import corrupt or orphaned OST files into Office 365 webmail account. You can even use its advanced filters for selective migration, such as based on to, from, cc, bcc, subject, etc.

Download it’s free trial to check how it works effectively;

Steps to Import OST to Office 365 Account

Step 1. Launch the software & add Outlook OST file to the software.

Step 2. Choose the mailbox folder(s) to migrate to Outlook 365.

Step 3. Select Office 365 as a saving option from the list.

Step 4. Enter Office 365 email address and click the Next button.

Step 5. Lastly, sign into the Microsoft page with login credentials.

Here, the OST to Office email migration process has been started.

Once completed! you will be confirmed through a log report. Click OK.

Now, log in to your Office 365 account and check all the transferred emails there.

Watch How to Open OST File in Outlook 365

Conclusion

This article explains two simple ways to import OST to Office 365 mailbox. You can choose the method that fits your needs. However, if the OST file is not linked to its current Outlook profile, importing it manually into Office 365 is not possible. In such cases, you will need to use an automated method to directly import OST file into Office 365 account. Whether you’re looking to import multiple files or recover data from inaccessible OST files, this tool can help. You can also try the free demo version to see if it works for you.