If Email marketing is successful for 0.0067% of the emails that I send I will be happy.
Yes, I expect many emails will be shot down as spam.
Just the very process of data mining has already identified 50 companies that I did not know about and never touched.
Data mining helps to identify the players in an organization and the corporate structure. To be able to cold call an account and ask to see a specific individual is helpful.
Yes, it does take a significant of time to develop a list and maintain it.
It can't be your only prospecting method.