When you call upon a company specializing in the supply of prospecting files, we suggest you take a close look where the data came from (sources, suppliers), when/if/how updated, and compliance with legislation (mainly GDPR and BLOCTEL for the telephone). Data quality is a point not to be neglected in order to preserve the image and perception of your brands. In this age of social networks and GDPR, poor data can have nefarious consequences in terms of bad buzz and financial sanctions.