에스원 PS Messenger is a communication app that provides convenient and secure communication features suitable for various work needs and styles. This app allows for the safe and convenient transfer and utilization of important documents within the company. This service is exclusively provided to "Esone PS" customers.

The app offers two types of messages: a convenient email-style and a chat-style message, both suitable for different work styles. It also provides a read receipt and message recall feature, which helps to prevent confusion in work communication. The app offers a secure file-sharing environment through the Esone PS linkage function.

To ensure the proper functioning of the app, it requires a few essential permissions. It requests access to storage and device connectivity to send and receive attachments, access photos, videos, and files. It also requests access to device identification to connect with other company members through phone calls (applicable to Android 8.0 and below).

Overall, the Esone PS Messenger app is a convenient and secure communication tool for companies that require safe and efficient communication features.