The above discussed article is very informative. Even I also do searches on these similar topics. I have found a blog similar to this article on ‘How to open Thunderbird MBOX files to Outlook PST files?’ The manual method described here is very clear that, even a non-technical user can implement it easily. The automated solution is described in the blog, to transfer .mbox file to Outlook has many advanced features like it converts MBOX to PST without installing MS Outlook in the system. It has a provision to migrate .mbox files to NSF format.