Rated 5 out of 5 stars

Why is there only 25 emails from each folder being exported when there is more? I am prepared to pay for a version that does ALL emails, but cannot find anything regarding a registration. Added on the 16th March 2021: My mistake, the MBox files were created by a free product and not a full version, only saving 25 emails from each folder, did not know this at the time as these MBox files were sent to me by a family member. Have notified the family member about this as he was not aware of this either. Once he registered the program that created the MBox files, everything worked perfectly with the ImportExportTools NG, very pleased.

No, you should not have to pay anything!
can you post to the repository where we can diagnose ?