I send out postcards twice a month, I don't do the work myself but have a company that does it for me.

They have my mailing list and my postcards and send them out twice a month.

I will see if I can get the information for you on where to buy a mailing list, I just need to email my contact and get the info from her and get it over to you as well as a place to get postcards designed and printed.

There are mailing houses that do this sort of thing for companies large and small.