Canned email responses are templates that save time by reducing the need for repetitive writing, allowing users to focus on more important tasks. These templates can be used for common email scenarios such as buying time, following up, responding to inbound requests, kicking off new projects, forwarding questions to the correct person, and scheduling meetings. To create effective canned responses, it's essential to identify frequently sent emails, customize them with minor tweaks, and update them periodically. Additionally, using automated tools like Zapier can help streamline the process of sending canned responses. By implementing canned email responses, individuals can free up mental space, save time, and improve their overall productivity.