Postal distribution of leaflets

Has anyone looked into postal distribution (i.e. snail mail distribution) of leaflets? (e.g. for distribution of vegan leaflet, etc.)   For example, (I’m not affiliated with them) offers printing and mailing flyers for 43.8cents/pcs ( or brochures for 70.8cents/pcs


Even if you are not “antinatalist”, what do you think about what I wanna call a “reducenatalism” (REE-dyoo-see-nay-tuhl-izm)? Reducenatalism, like reducetarianism, seeks to reduce the number of children one will have. One does not need to be childfree/childless or antinatalist