Some sales marketing funnels also integrate with other sales tools so as to create even more effectiveness. For example, if a possible customer makes a purchase decision after being presented with a sales funnel that includes offers like a completely free site, a free e-book, or other similar things, the value of the overall sales experience has been greatly increased. Also, if the sales funnel is intended to follow up on a lead, the sales rep can add a follow up call to additional interest the client in the product.