I don't know of any major import functions for all account data, but things like contacts can be interchanged, and emails can be archived outside of an email se

I don't know of any major import functions for all account data, but things like contacts can be interchanged, and emails can be archived outside of an email service. I think the real benefit to a cloud service backup is an interface to browse and search your data (specifically the data that can't really be restored).