A warm call is much more valuable than a cold one. Many have already declared cold calling dead and would rather focus on warm leads because when you contact a warm lead, a person is expecting to hear from you or at least has shown some interest towards your business. This means that he or she is much more willing to listen to you and consider purchasing your offering since they have already considered you an option.
In marketing, lead generation is the initiation of consumer interest or enquiry into products or services of a business. Leads can be created for purposes such as list building, e-newsletter list acquisition or for sales leads. The methods for generating leads typically fall under the umbrella of advertising, but may also include non-paid sources such as organic search engine results or referrals from existing customers.