Are you asking if any company uses direct mail?
Are you asking if any marketing service companies provide direct mail services?
Now, a real estate professional should carefully consider the ramifications of sustaining a proper level of communication with a buyer or seller who does not have a computer, mobile device or easy access to the internet.
Be careful, you just might get what you ask for.
Regarding your question, they all do.
Now, if the don't have a telephone either, that would be really exciting