OK all, I need recommendations for a new email hosting service.

I have been with usually reliable Rochen for years - had all my clients on there before I closed my ad agency - but they have had a massive crash last Friday night and everything is still down today. Their support is a joke.

So, no need for website hosting (do not have one any more) just need email service for 4 domains. Any ideas? What do you use, how much per mailbox, and is it reliable?