Specifically, we used the mobile communication network of all residents in Mexico resulting from the aggregation of calls and SMS exchanged between users over a period of 3 months from December 2015 to February 2016. The resulting social network contains 110 million people and 351 million links. The campaign was conducted on a total of 656,944 people who were targeted by a SMS message offering a consumer product according to their ranking in our list of top influencers in the social network. We also sent messages to a control group of 48.000 nodes, chosen randomly. To evaluate the campaign, we measure the response rate, i.e. the number of recipients who requested the product divided by the number of targeted people as a function of the influencers ranking. In the control group, the response rate to the messages was 0.331%. On the contrary, groups targeted according to our influencer algorithm showed a sharp increase in their response rate, with a sound three-fold gain to 1% in the rate of response of the top influencers identified by our algorithms when compared to the random case.