B2B outsourcing is the process of contracting with another company to provide services or products that are needed by your business. This can be done for a number of reasons, including saving money, reducing overhead costs, or gaining access to specialized expertise. One common type of B2B outsourcing is email marketing. This involves contracting with a third-party provider to manage and send email campaigns on your behalf. This can be an effective way to reach a large audience without having to invest in your own email infrastructure.