Keep getting emails from a collection about a loan that’s several years old

I did this small loan for like $175 several years ago. I know it’s been at least 6 years but not sure on the date. I now out of the blue am getting emails from a collection agency trying to settle with me for $115. I know that after 7.5 years they cannot report it to the credit bureaus. Should I email them and request the original documentation and date? I don’t want to “reset” the loan or anything. I also don’t want it reported to the credit bureaus. Any suggestions?

Edit: I have never heard about this until now years later. It hasn’t been on my credit report at all either.

Edit: I looked through my emails and see that the loan was taken out in February of 2014.