These are unwanted offers. A telephone call to the given ‘opt-out’ number and a written request to stop these has caused the offers to increase many fold!
I have one credit card and I always pay it on time. The moment I get the bill. I don’t know my Fico score and there is no bad mark on my credit history (though limited).
Though I am glad but why do you think I don’t get any pre-approved credit card offere whereas my family members get 2 per day?