Or a your more general style for new people.
It seems like Google at least should have a TONNE of context to use for this.
Like in his example emails about being asked to meet - it should be checking the calendar for you and putting in if you can / can’t or suggesting an alt time you’re free.
If it can’t actually send emails without permission there’s less harm with giving an LLM more info to work with - and it doesn’t need to get it perfect. You can always edit.
If it deals with the 80% of replies that don’t matter much then you have 5X more time to spend on the 20% that do matter.