Configuring Gmail Archiving

You can archive emails and attachments in Gmail. To make archived Gmail content available, configure an Email Archiving job.

To perform searches on archived Gmail content, configure and run an Email Indexing job first—see Configuring Gmail Indexing. An Index Job is not required if you only want to archive Gmail data for compliance reasons, and do not intend to search the data.
It is not necessary to create a policy to guide this job.