How to Open and Convert Large MBOX Files Without Errors?

[Brantanson01]

I am dealing with a very large MBOX file from my old email client, but whenever I try to open or convert it, I encounter errors or crashes. The file size is huge (several GBs), and I need to either access the emails or convert them to a more manageable format like PST, EML, or PDF for backup and long-term storage. I am looking for a reliable and error-free method to handle this large MBOX file. Are there any tools or manual methods that can open or convert large MBOX files safely without losing data?

[Allacrook]

You can open and convert large mbox files to PST and other formats by using the WholeClear MBOX Converter app. It can move MBOX emails to multiple file formats such as PST, EML, EMLX, MSG, HTML, MHTML, NSF, etc. . While the info is being sent, it is kept safe. People can see the MBOX files and pick which ones they want to convert before they do it. From Windows XP to Windows 11, this tool works with all of them. People can move info between MBOX and PST files with this tool. The app is free to try for anyone who wants to.