People who are dedicated to the Internet business know very well that we must always accompany the plate main from our business with small appetizers do you know what I mean? are cross-selling, which is what I will explain in the following lines. We can make an analogy between cross-selling and places of fast food offered in your area. When we go to an establishment of fast food in our city, we are approaching the counter and make our order and that it happens, the young lady tells us you want to accompany your order with French fries? Or do you not want an additional portion for only 50% of its original value? offer us different products to complement our request, of course that in the majority of cases we accede to these promotions and buy without any inconvenience. The idea of cross-selling is exactly the same, IE: offer alternative or complementary to our main product products to our list of subscribers. We usually have a product star that promote it with greater interest as the principal of our online business, however must know that in the world of the Internet business is a very good practice to promote products related to our niche market, aiming to increase our sales and deliver to our customers and/or subscribers a range of products which can be interested and motivate him to buy bigger. In the following paragraphs we detail some considerations to generate sales crossed from our main product: trace messages-send to our list of subscribers additional follow-up messages that we use in our main product. Once the batch of emails sent from our main product that should be of at least a week – we can begin sending mailings offering additional products, this will help to maintain constant contact with our list of subscribers and will have greater chance of consummation of any sale.