How to Migrate Emails from OST to Thunderbird?- A Simple Guide

Summary: - Moving from Outlook to Thunderbird is a great decision, but moving your emails is a challenge. Outlook stores mailbox data in OST files, which are not compatible with Thunderbird. If you want to migrate emails from OST to Thunderbird, without any loss of data, you're in the right place. Let's discuss the best possible ways to convert Outlook OST to Thunderbird.

Why Migrate Emails from OST to Thunderbird?

• Thunderbird is open-source, free, and runs on Windows, Mac, and Linux.
• It's also a popular choice for users seeking more control of their email or who are escaping Microsoft 365.
• OST files are Exchange-specific and Outlook-bound, so it's not so easy to transfer them elsewhere.
• Switching to Thunderbird ensures your emails become portable, easily accessible, and simple to tack.

To get started with the manual method, you’ll first need to convert OST file into PST format using Outlook and then import that PST file into Thunderbird.

Phase 1. Convert OST file to PST format

• Open Microsoft Outlook on your computer.
• Go to File > Open & Export > Import/Export.
• Select Export to a file and Next.
• Select the export format Outlook Data File (.pst).
• Choose the folder that you wish to export.
• Enter the file name and destination folder.
• Click Finish to begin exporting.

Phase 2. Import PST to Thunderbird

• Make Outlook your default mail program through Control Panel > Programs > Default Programs, then select Outlook and make it default.
• Launch Thunderbird and click on the menu, then go to Tools > Import.
• Choose Mail or Import Everything and click Next.
• Select Outlook as the source and click Next.
• Now, select the items you want to import from Outlook and proceed.
• Click Finish to initiate the import; it can take a few minutes to finish.

Limitations of Manual Method

• It's very time-consuming because every step has to be performed manually, particularly with huge mailboxes.
• There's always a risk of losing or corrupting data if you're not at ease with the technical procedure.
• It is not suited for bulk migration, as you'll have to repeat the manual process for every file or folder you need to migrate.

Alternate Solution to Batch Convert OST to Thunderbird with Attributes

One of the most effective methods of transferring OST files to Thunderbird is through the BitRecover OST Converter Software. This utility facilitates the migration of not only emails, but also contacts, calendars, notes, and more directly from OST to Thunderbird. When I tested it myself, I was amazed at how fast it performed the process-exporting more than 30 emails from my OST file to Thunderbird within a matter of minutes. The simplicity in the software design implies you lack technical know-how, and the software maintains all your data hassle-free.

Software Steps to Migrate OST to Thunderbird

• Install and run the OST to Thunderbird Migrator on your Windows or Mac system.
• Import OST files to the application by allowing it to auto-detect from your system or manually selecting particular folders.
• Go through the mailbox folders shown and choose only those that you wish to migrate.
• From the save options, choose Thunderbird as your export type.
• Now, utilize the filter options to implement additional settings for selective conversion if required.
• The program will automatically find your Thunderbird profile and verify the path.
• Click Convert to start importing your OST data into Thunderbird.
• Monitor the live progress in the tool, and once finished, verify your selected output location to ensure successful migration.

Key Takeaways

Changing from Outlook to Thunderbird is a good idea for flexibility and expense, but transferring your emails can be problematic because Thunderbird does not support OST files. The manual approach involves OST to PST conversion in Outlook first, followed by import to Thunderbird, but it is slow and not suitable for multiple or large mailboxes. Automated software such as OST to Thunderbird converter speed up the whole process, making it effortless and secure saving all your mails, attachments, and folder hierarchy within a few clicks.

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