Keymailer is a platform that connects game developers and publishers with influencers, such as YouTubers and streamers, to promote video games. It facilitates the distribution of game keys to content creators, enabling them to access and review games, thereby generating exposure and driving engagement. Keymailer also offers tools to manage and analyze campaigns, track reach, and measure the impact of influencer activities. The platform aims to simplify the process of collaboration between game creators and influencers, ensuring that gaming content reaches relevant and interested audiences.