This is archiving, not a replacement for a mail server. This way you can delete all mail from your provider >30 days, for example, and still keep searchable cop

This is archiving, not a replacement for a mail server. This way you can delete all mail from your provider >30 days, for example, and still keep searchable copies off net. It's a nice middle ground and, yes, Google would still have seen all of your mail - however it wouldn't have access to it long term.