The impact of mass electronic mail campaigns, automated marketing, segmentation of campaigns on social networks or well, telephone campaigns depends both on the quality of information and on the platforms where each of them is implemented.
Although there is a wide variety of platforms to implement all types of campaigns, if the information you use in these is not of high quality, your results will always be below your expectations, generating additional wear and tear and an important associated cost. Clearly both situations are not potential or project you negotiate the project.