Upstream

Upstream is a productivity tool that reimagines the email inbox as a collaborative workspace for both humans and AI agents, allowing users to delegate tasks, automate workflows, and manage communications in a single, unified interface. It’s designed for professionals and teams overwhelmed by email overload who want to offload routine work to agents while maintaining control. Its interesting twist is treating AI as a first-class participant in the inbox, enabling a seamless blend of human judgment and automated execution.