There is one particular secret to using such mentioned strategy, that is, to employ good follow up. The different between using a billboard or ad and using a telemarketing mortgage lead is that, with the former, companies purchase the advertisement and hope for the best. On the other hand, with telemarketing mortgage leads, the company makes direct contact with the interested party. With the lists of contacts, the lender of telemarketing mortgage leads can either send a mass email or have representatives call the contacts. It is important to note that in either situation, it is important that the lender of telemarketing mortgage leads steer the interested party towards his services with information in the mail or in an email. This is where the follow-up comes in.