Delete users subscriptions

[msimplay]

i'd like to have a way to delete user subscriptions for example mails keep bouncing at from certain users email boxes as they never seem to clean them
so i'd like to be able to delete that persons thread subscriptions

[Andreas]

Can be done via ACP/Users

Or

delete from subscribethread where userid=1234

Of course 1234 must be replaced with the real userid.