Final answer:
A statement about the project manager using email to communicate with stakeholders at major project milestones would typically be included in the project communication plan, a component of the project plan.
Step-by-step explanation:
A statement indicating that the project manager will use email to communicate with stakeholders at major project milestones is usually found in the project communication plan, which is a part of the overall project plan. The project plan outlines how various aspects of the project will be managed and includes details on communication strategies and methods for engaging with stakeholders. It sets the groundwork for how information will be disseminated throughout the project lifecycle to ensure that everyone involved is informed and up-to-date with the project's progress and any critical decisions made.