Daily briefing
Daily briefing is a personal script that runs on its author's own computer each morning. It builds a one-page summary of the day: email that needs a follow-up, tasks that are due, calendar events for today and tomorrow, and the local weather forecast.
It is used by one person, for their own Google account. It is not a public service, and there is nothing to sign up for.
It asks Google for read-only access to Gmail and Google Tasks. It never sends, changes or deletes anything.