How can I prevent data loss when converting PST files to Thunderbird?

Converting PST files to MBOX format (used by Thunderbird) can be a difficult process with different methods leading to lost emails, missing attachments and corrupt data. It is just as important to select a method that allows for total conversion of your data.

1. Manual Method (Free, but Risky and Takes Time)
Who is this for: 
Users that have a small PST file, basic technical ability, and patience to go through multiple steps. 
User that are willing to spend some time in pursuing this method.

Step A: Export PST Emails to EML Format

Open Outlook

File → Open & Export → Import/Export

Select Export to a file→ Outlook Data File (.pst)

Save selected emails to your system in a folder in the EML format.

Importing EML into Thunderbird:

First, launch Thunderbird.

Then, use the ImportExportTools NG add-on.

Next, right-click on the folder you want to import them to and select Import all messages from a directory and select your EML folder.

Limitations and Risks

• When converting emails in a manual way, this process can take a long time, especially when working with large PST files.
• Attachments may not be imported correctly on certain occasions.
• The folder hierarchy can be lost, resulting in disordered emails.
• The user must repeat the process with care, to ensure nothing is missed.

Using Softaken PST to MBOX Converter - Technical Method

For users seeking a rapid method to convert PST files to Thunderbird, Softaken PST to MBOX Converter is a good option. The software allows you to add one or more PST files and export them to MBOX file format which is compatible with Thunderbird. The software maintains the original folder structure during the conversion so all your emails reside well organized like the way it was in Outlook. The app will also maintains all emails attachments, metadata and original properties such as sender, recipient and timestamps ensuring there is no data loss. The software does not crash and can manage large PST files making is suitable for both professional and personal use. This tool supports all email clients of the MBOX file such as Apple Mail, Thunderbird, Poco Mail, Power Mail etc. The interface is simple and is designed to be user-friendly so not much technical knowledge is needed and it can all be complete in a few easy clicks to complete the conversion. Compared to the method previously mentioned, this method saves time, is technical, and guarantees a seamless transition from Outlook to Thunderbird while ensuring there is no loss of data.