How do I transfer Thunderbird folders into Apple Mail?

How do I transfer Thunderbird folders into Apple Mail? ?

Kyla jain , 11 May 2026

1 Answers

When I switched from Mozilla Thunderbird to Apple Mail, I faced a big problem transferring my mailbox folders. At first, I thought I could directly move the Thunderbird files into Apple Mail, but none of the emails appeared properly. After searching for solutions, I found that Thunderbird folders need to be exported in MBOX format before importing them into Apple Mail. I installed the ImportExportTools NG add-on in Thunderbird and exported all my folders as MBOX files. Then, I opened Apple Mail and selected File > Import Mailboxes > Files in MBOX Format. After choosing the exported files, Apple Mail successfully imported all my emails and folders. However, the manual process was time-consuming for large amounts of mailbox data. Later, I used the BLR MBOX Converter, which made the migration much easier. It transferred all Thunderbird emails into Apple Mail while keeping attachments, folder hierarchy, and email formatting completely safe. Visit Here: https://www.blrtools.com/mbox-converter.html

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