Bandwidth is the amount of data that can be "fit" through the data pipeline that is your network and its connection to the larger Internet. Bandwidth costs money. Most service providers allow a certain amount of bandwidth usage per month, followed by fees for additional usage. Depending on your traffic, a given month could prove particularly expensive just because you were using an essential function of business—the Internet. Email also uses bandwidth, and so outsourcing can reduce the strain on your in-house system, and reduce the costs of overages. Additional benefits include the ability to micromanage email usage, to discover who might be abusing their email privileges and using more bandwidth than what you might think is necessary for their given office function.