CULES has three mailing lists. You can subscribe or unsubscribe yourself to/from them at any time.
Just show and audition announcements. Low volume. If you signed up to a list at Freshers' Fair, this is the one.
The main society mailing list. Show and audition announcements, plus society events like dinners, meetings, parties, holidays.
A higher volume list with pub announcements, other social gatherings, occasional nonsense.