What’s a courier, exactly? The terms messenger and courier are often used interchangeably, and if you are looking for the types of services offered by these professionals, you may be wondering if there is any difference between the two so that you know whether to request messenger services or courier services, depending on your needs. The fact is that just as the two terms are typically used to reflect the same type of services, the actual messenger definition and courier definition are the same. read full review »