Outsource Lead Generation typically work with large databases. These could be either internally created through scraping data online or purchasing existing online databases. Once the database is filtered based on your target segment, outsourced lead generation companies will proceed to make contact with 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 number of leads delivered or a combination of both.