Mattermost is an open source messaging platform that helps teams stay connected and productive in a secure, private environment. It is designed to make communication both faster and easier, while keeping sensitive data safe. With Mattermost, you can create private channels to communicate with specific members of your team, or organize conversations and files into topics, projects, and teams. You can also share files, search for any topic or message, and customize notifications and access settings. Mattermost’s main feature is its scalability, allowing for unlimited users and channels. It also offers comprehensive security, including data encryption, user authentication, and access control. Additionally, there are no limits to the number of files, messages, or messages per day. This makes Mattermost ideal for large organizations and teams that need to manage large amounts of data and communications.