An application used to manage emails effectively is an email client. Popular examples include Microsoft Outlook, Gmail, and Apple Mail. These applications allow users to send, receive, organize, and archive emails efficiently. Email clients often offer additional features such as calendar integration, task management, and contact lists. They enhance productivity by providing tools for sorting and filtering emails, enabling users to prioritize important communications. Advanced features like spam filtering and encryption enhance security and improve user experience by reducing clutter and protecting sensitive information.