Import EML email files into Mozilla Thunderbird. Drag-and-drop EML files or use ImportExportTools NG for bulk import. Works on Windows, macOS, and Linux.
| Feature | EML | Thunderbird |
|---|---|---|
| Format type | Individual email files | Full email client |
| Viewing | Requires email client to view | Complete rendering with search |
| Organization | File system folders | Email folders with management tools |
| Search | OS file search only | Full-text email search (indexed) |
| Reply/Forward | Not possible from file | Full email functionality |
| Filtering | Manual file sorting | Rules-based automatic filtering |
Open Thunderbird and navigate to the folder where you want the emails. Open your file manager alongside Thunderbird, select the EML files, and drag them into the Thunderbird folder. The emails are imported instantly.
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Install the ImportExportTools NG add-on from Thunderbird's add-ons manager. Right-click a folder, select ImportExportTools NG > Import all EML files from a directory. Select the folder containing your EML files.
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If you have many EML files, use MailtoPst to combine them into MBOX files (one per folder). Then import the MBOX files into Thunderbird using the built-in import wizard or ImportExportTools NG.
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Step by step
Drag & drop or click to upload your .eml file. Files up to 51 GB supported with resumable upload.
Select Thunderbird from the format dropdown. MailtoPst auto-detects the best conversion settings.
Conversion takes seconds. Download your .thunderbird file or receive it by email.
100 MB free credit. No credit card required.
FAQ
Yes. Thunderbird natively understands EML files. You can double-click an EML file to preview it, or drag EML files into any Thunderbird folder to import them permanently. No add-ons are required for basic EML import.
Install the ImportExportTools NG add-on. It can import an entire directory of EML files at once, including subdirectories. Alternatively, convert the EML files to MBOX format using MailtoPst for even faster bulk import.
Yes. EML files contain attachments encoded in MIME format. When imported into Thunderbird, all attachments are accessible normally — you can view, download, and forward them just like any other email.
Yes. Create folders in Thunderbird first (right-click > New Folder), then drag EML files into the appropriate folders. With ImportExportTools NG, you can import a directory structure that maps to Thunderbird folders.
Yes. Thunderbird is available on Windows, macOS, and Linux. The EML import methods (drag-and-drop, ImportExportTools NG) work identically on all three platforms.
First conversion free. No credit card required.