We keep email light: a booking confirmation, an optional reminder before a session, an optional heads-up when a favourite host opens a room, an optional monthly recap, plus an optional monthly newsletter and occasional announcements. Turn any of them on or off in Settings → Notifications, or use the one-click unsubscribe link at the bottom of any of those emails. Every booking confirmation carries a calendar file, and you can have all your bookings appear in Google Calendar automatically: Settings → Account → Calendar → Connect Google Calendar (we only ever see the one "Task Party" calendar we create there).
Important account and safety emails always come through, so you are never left in the dark about your own account.