How to Import MBOX to ProtonMail Account: A Simple Guide

Anshu_123

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To import MBOX files into ProtonMail, follow these steps using the ProtonMail Import-Export app or a third-party migration tool.

Method 1: Using ProtonMail Import-Export App​

  • Download the Import-Export App: This app is available for Windows, Mac, and Linux users. You can find it on the official ProtonMail website
  • Log In: Open the app and log in using your ProtonMail credentials.
  • Select Email Address: Click on your username to view your email addresses. Choose the one where you want to import the emails and click on the Import button next to it
  • Import Local Files:
    • Choose Import local files.
    • Select the folder containing your MBOX files. The app will search for MBOX and EML files recursively.
    • Specify any desired labels or date ranges for the import.
  • Start Importing: Click on Import to begin the process. The emails will be encrypted using your public key upon import

Method 2: Using Third-Party Tools​

If you prefer a more direct method or need to migrate multiple MBOX files, consider using a third-party migration tool like Cigati MBOX Converter Tool:
  • Install the MBOX Converter Tool on your system.
  • Click on Add File(s)/Add Folder to select your MBOX files for migration.
  • Choose IMAP as your saving option, then enter your ProtonMail credentials along with the IMAP host and port number.
  • Click on Export to initiate the transfer of MBOX files to your ProtonMail account.
  • Monitor the live export status within the application.

Conclusion​

Both methods are effective for importing MBOX files into ProtonMail, with the Import-Export app being suitable for individual users and small imports, while third-party tools may be more efficient for larger migrations.
 
To import MBOX to ProtonMail, you can use Advik MBOX Converter, which helps you convert your MBOX emails into EML format. First, download and install Advik MBOX Converter on your computer. Add your MBOX file into the software, choose EML as the output format, and start the conversion. This step quickly creates individual EML files for each email, making them easy to import into other email clients.

Next, open Mozilla Thunderbird and create a folder connected to your ProtonMail account through ProtonMail Bridge (you’ll need this app set up to link ProtonMail with Thunderbird). Once connected, simply drag and drop the converted EML files into your ProtonMail folder in Thunderbird. This way, all your MBOX emails will sync securely to your ProtonMail inbox without losing any data or formatting.
 
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