Sometimes I write emails to tell corporations that they are famous because they did a positive thing. I believe it encourages them, even if the email is eaten b

Sometimes I write emails to tell corporations that they are famous because they did a positive thing. I believe it encourages them, even if the email is eaten by the receptionist, if you can somehow demonstrate in the email that it brings them customers ("I always recommend XYZCorp because of that thing you did for the community").