DennisThat may be your system Grant, don't assume you know every way someone else's system work
Computers store information binary format. each bit is stored was a word. each word may contain 8, 16, 0r 32 bits and so on
this means information storage is pretty stranded across all computers and software.
A CSV, TXT , DXF etc file formats can be used to transfer information between programs. so it doesn't matter how your system works it will have a basic information storage system
in Excel for example you have in the as save as menu a large selection of what file format you want to save your file as eg xls.CSV and so on
The AFB PMP recent consultation was done using mail chimp. Many many people and groups use mail chimp to connect with customers. So there is plenty of people who know how to use mail chimp
Once you have a basic understanding of computers it is pretty easy to jump from program to program