How to stop CR4 incoming traffic

As I am going on four weeks holiday, YIPPEE, and access to the system may be difficult, I want to temporarily stop CR4 emails from coming to me.

If I simply "unsubscribe to all" on a temporary basis is it possible to "resubscribe" on my return? If so how do I do it.

I can't find this in the FAQ's

Thanks to you all, its a really great forum, and I don't want to cut myself off permanently.