How to bulk transfer MSG files into Thunderbird mailbox?

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Thunderbird does not support MSG files directly since they’re created by Microsoft Outlook. To import MSG emails into Thunderbird, you first need to convert them into a Thunderbird-compatible format like MBOX. The easiest way to do this is by using a reliable tool such as DataVare MSG to MBOX Converter. This software lets you convert multiple MSG files at once into a single MBOX file without losing any data. It maintains all key elements like attachments, formatting, sender/receiver details and folder hierarchy. The tool works without Outlook, supports all Windows versions and offers a free trial along with technical support.