If you're looking to export Thunderbird emails into MSG files, you're not alone. Thunderbird stores emails in MBOX format by default, which isn't directly compatible with Outlook's MSG format. Unfortunately, there's no built-in option in Thunderbird to export emails as MSG. That's where a reliable solution comes in -- the best way to convert Thunderbird emails to MSG is by using a professional Thunderbird Backup & Converter tool. Personally, I will recommend the Mozilla Thunderbird Backup Tool by MigrateCloudData. It allows you to export emails from Thunderbird to multiple formats, including MSG, PST, EML, PDF, and more. The tool ensures that folder hierarchy, attachments, and formatting are preserved during the conversion -- perfect for backup, migration, or compliance needs.