Outsourcing Lead Generation Services typically work with large databases. These could be either internally created through scraping data online or purchasing existing online databases. Once the database is separated based on your target segment, outsourced lead generation corporations will contact your buyers either over email or over the phone. In terms of pricing models, outsourced lead generation companies will either charge you a retainer for doing a certain number of reach outs or charge you for the amount of leads delivered or a combination of both.