Global B2B Contacts provides targeted mailing lists of qualified professionals for B2B marketing campaigns. Their Nagios Network Users Email Leads list contains segmented data on decision makers in that industry. The lists are compiled through rigorous data collection and verification processes to ensure high response rates. Global B2B Contacts offers lists segmented by job title for professionals such as CEOs, CIOs, and IT managers. They also provide email appending services and samples of lists before purchase.