If you have a small number of EML files, you can import them into Thunderbird by dragging and dropping the files into a folder under Local Folders. For a larger collection, an import utility such as ImportExportTools NG can be useful because it supports importing individual EML files as well as EML files from a directory.

If the EML files are coming from another email application and you need more control over the migration, you can also use an EML conversion tool. PCDOTS EML Converter is one option that can help convert EML files into formats such as MBOX before moving the mailbox data to Thunderbird. This can be useful when you have a large number of EML files and want to organize the data before importing it.

Before starting, it is a good idea to keep a backup of the original EML files and check a few imported messages, including their attachments, after the migration.

For converting MBOX to EML files in bulk, using a dedicated MBOX conversion tool is usually more practical than exporting messages individually. A suitable converter can load one or multiple MBOX files, identify the emails stored inside them, and save the messages as separate EML files.

PCDOTS MBOX Converter can be used for this purpose. Add the required MBOX files, select EML as the output format, choose a destination folder, and start the conversion. The software is useful when dealing with large MBOX archives because you can process multiple files together instead of opening and saving each email manually.

When converting email files, it is important to retain messages, attachments, and other useful information. Manually copying data can sometimes be difficult when dealing with a large number of emails. PCDOTS Email Converter Software provides a convenient way to convert supported email files while keeping the available email data together.