http://www.cmo.com/features/articles/2016/6/30/how-to-have-individual-conversations-with-a-million-customers.html?scid=social65079586&adbid=767850848219049984&adbpl=tw&adbpr=63786611
http://www.cmo.com/features/articles/2016/6/30/how-to-have-individual-conversations-with-a-million-customers.html?scid=social65079586&adbid=767850848219049984&adbpl=tw&adbpr=63786611