Which of the following can't be done by using Outlook?

Creating and editing flows is not something that can be accomplished directly within Outlook. While Outlook can be integrated with Power Automate, its primary function is email and calendar management rather than flow creation or detailed flow editing.

Power Automate is a separate platform specifically designed for building and managing workflows. Users typically access Power Automate directly through its dedicated interface to create, modify, and manage their automated workflows. Though Outlook can trigger flows based on events such as receiving an email or a calendar event, it does not have the capability to provide a full design environment for developing or editing the actual flows.

In contrast, triggering a flow, providing input variables, and utilizing output variables are functionalities that can be supported through interactions with Outlook. For instance, an event in Outlook can serve as a trigger for a flow, and emails or calendar appointments can include data that acts as input to those flows. Additionally, desktop flows can include variables derived from Outlook actions, showcasing how integration can work in a limited capacity even though complete flow management requires a different tool.