It sure was an excellent purchase -- one of the most secure services available world-wide, operated in the EU with strong privacy and completely outside US jurisdiction.
You weren't able to collect your emails for a brief 5 minutes, but you'll live.
Switzerland is not in the EU.
Hello from Switzerland :) We are not in the EU not just "technically" but as a fact. None of these agreement covers the exchange of private emails or metadata with the EU.
But as a fact with have to comply with EU-Laws -> Schengen.