I just need an off-site email as a fail-over for if my own cloud services are interrupted. I will always want to have some kind of third-party email service for

I just need an off-site email as a fail-over for if my own cloud services are interrupted. I will always want to have some kind of third-party email service for absolutely-must-receive messages, like alerts from the cloud service provider. I live in fear of the day that one of those alerts sent by the virtualhost provider is information about an outage going on at that moment. OwnCloud looks cool as a Zimbra replacement possibly, for the personal storage aspect, while I finish coding my own stuff.