Currently, the logistics in e-commerce is one of the big problems, especially in the deliveries between the company and the consumer, as result it generates additional costs that make the online service is not all efficient that it could be. Therefore, the present work focuses on the study of a new practice in the B2C e-commerce logistics, Logistic Crowdsourcing, as well as the creation of a model of costs and emissions about this innovative practice. To carry out the study about this practice has been made a literature review and the study of some projects of companies that nowadays are offering this service. Later, also it is created a model to calculate the costs and the emissions of the Crowdsourcing Logistics. Regarding the results, in the analysed articles there are nothing about Crowdsourcing Logistics, that is, there is a gap, even if there are real projects around this practice currently being carried out. This way, it has been possible to define this concept, how this practice is made and the most important players. About the creation of the model and the related simulations, it can say that the results have allow to extract some interesting conclusions, which allow to understand still better this innovative practice. So, this paper aims to offer an alternative to current problems in the B2C e-commerce logistics with the Crowdsourcing Logistics and study the costs and the emissions of some hypothetic scenarios with the model created for this practice. And this way understand better the concept and really if it is a good and optimal solution, alternative or not.