People is a contact manager that is included in Windows 8 and 10. It allows a user to organize and link contacts from different email accounts. People has a unique graphical interface, unlike Windows Contacts' File Explorer-based interface, based on the Metro design language that had already been used for Outlook.com and the integrated online People service. In addition to being an address book, it provides a list of recent mail conversations with a selected contact. It used to also be a social media hub, in which users could integrate their social networking accounts (e.g. Twitter), but API changes in both Windows and social media services caused this functionality to break.