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Written By Rohan Wiese
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Updated on October 17th, 2025
Before we start, you must understand exactly what an EMLX file is.
EMLX files are used by Apple Mail, and they store each email message in plain text. An EMLX file stores the body of each email message, in addition to headers and attachments. EMLX files cannot be opened or imported into Thunderbird because they are not a supported file type. The files will need to be converted to a Thunderbird-supported file type or imported in some manner.
There are many reasons someone might have for migrating or transferring EMLX files into Thunderbird, including:
Let’s explore the best ways to import EMLX files to Thunderbird step by step.
Since Thunderbird accepts the .eml file type but not .emlx, the easiest method is to change your EMLX files into EML files first.
Step 1: Find Your EMLX files
Step 2: Change EMLX into EML Files
Step 3: Import EML Files Into Thunderbird
Note: This method is best for small email imports. For large data and bulk migration it takes a long time and attachments can be lost or formatting can be incorrect.
If you don’t want to manually rename or convert files, Thunderbird provides an extension that simplifies importing external messages.
Step 1: Install ImportExportTools NG
Step 2: Prepare your EMLX or EML files
Step 3: Import your files into Thunderbird
The Aryson EMLX Converter Tool is a user-friendly software that helps you easily import your EMLX files into Thunderbird. It guarantees no data loss, supports bulk migration, and keeps the original folder hierarchy intact. This tool can also convert EMLX files into several other formats, including PST, MBOX, PDF, EML, and more. It makes the product an option for businesses with a substantial amount of email data or users with little technological expertise. Along with Office 365, it can also import EMLX Files into Gmail and other file formats.
When a user tries to import EMLX to Thunderbird, it may appear complex, but it is simple if you follow the right steps. You can either do a manual conversion, import EMLX using the Thunderbird ImportExportTools NG extension, or select an automated utility to move EMLX to Thunderbird without losing any of your important emails. By following the steps above, you can transition smoothly, safely, and efficiently, and you should not need any specialized technology knowledge, as shown.
Ans: No, Thunderbird doesn’t support direct EMLX import. You can use Aryson EMLX Converter to easily import them without data loss.
Ans: The best way is using Aryson EMLX Converter, which ensures quick, secure, and bulk import of EMLX files into Thunderbird.
Ans: Export Apple Mail emails in EMLX format and import them into Thunderbird using the Aryson EMLX Converter Tool.
Ans: Yes, Aryson EMLX Converter supports batch import, allowing you to move multiple EMLX files into Thunderbird at once.
About The Author:
As a lead technical writer, I know the technical problems faced by office and professional users. So, I decided to share all my technical knowledge through this blog. I love helping you with tough challenges when dealing with technical issues.
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