Сообщения сообщества is an unofficial messaging app that allows users to exchange messages on behalf of VK communities. The app is available for Android and it is free to use. However, to receive notifications, users need to add the app to the battery optimizer exceptions.

The app offers a simple and intuitive interface for users to communicate with other community members. It allows users to send and receive messages, view chat history and manage conversations. The app also supports push notifications for new messages, making it easier for users to stay up to date with their community activities.

Overall, Сообщения сообщества is a useful app for VK community members who want to stay connected and communicate with each other on the go. However, users should be aware that it is an unofficial app and may not have the same level of security and reliability as the official VK app.