As one of the Financial Strategist for RF Crimson PVP, we have a donation list where we give in-game items in exchange for donations made to the server. We actively track them via Google Forms :

Wherein the results are compiled into a sheet :

In my previous work in a ridesharing platform where we identify filtered messages that had critical words in it, we encode & track contacts such as :

Sample of a 30 row Construction Supply sales sheet including Buyer's name, Email, Phone number, Address, DoB, DoP, Item/s purchased, Quantity, Price, Total Amount, Order Number, Payment Method and Notes/Comments