Hi SweetTasha,
My name is Riccardo and I would be happy to help!
As you've stated, Outlook Express has been discontinued and is now a legacy product with no support; however, there are third-part vendors that have created a version of Outlook Express for this exact purpose.
This is a third-party vendor that provides Outlook Express to you: https://www.oeclassic.com/download
I've personally tested and it works fine; but, as with anything, you need to proceed with caution as this is not software that is approved by Microsoft.
This will allow you to at least restore the Outlook Express Data and export it in a format that will allow you to possibly put it into the Thunderbird application.
As for the GenieBackup, it looks like this application is still available: https://www.zoolz.com/genie9/
You may be able to download the trial and at least get your data restored for what you need with no cost.
I'm hoping the above answers your question and if you need any further assistance please do not hesitate to let me know.
DISCLAIMER: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.