Want to move Thunderbird email data to Outlook

Question

Hi everyone,I'm hoping someone here can help. I've recently backed up many of my old Thunderbird emails, which are in MBOX format. Now, I want to move everything to Microsoft Outlook, but I just realized Outlook doesn't support MBOX files directly.Has anyone here successfully converted MBOX files to PST? I’m looking for a method that doesn’t mess up the folder structure or email formatting. Free tools seem hit or miss, and I don’t want to risk losing data.Any help or recommendations would be much appreciated!Thanks in advance.

Exchange_User · Answer

If you are really looking to import MBOX files into Outlook 365, you can add your account in the classic Outlook desktop client, then drag and drop them into custom folders. But don't make the mistake of adding them to the inbox folder, you will turn it into an attachment.

jennifermaria · Answer

Hi,Yes, you’re right, Outlook doesn’t support MBOX files directly, so Thunderbird emails can’t be opened in Outlook without conversion. I faced the same situation earlier while moving old Thunderbird data to Outlook.What worked for me was using a dedicated Thunderbird/MBOX to PST converter instead of free manual methods. Manual tricks and free tools often break folder structure or skip attachments, especially when the mailbox is large.I used Advik Thunderbird to PST Converter, and the process was quite simple. It picked up my Thunderbird folders automatically and converted everything into a PST file with the same folder structure and email formatting. Outlook was not required during the conversion, which was a plus.They also offer a free trial, so you can test it on a few emails before deciding. That helped me avoid the risk of data loss.

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Want to move Thunderbird email data to Outlook

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