# Search and Content Indexing for Exchange Online

To search the contents of archived messages in Commvault Cloud search environments such as Compliance Search and ContentStore Email Viewer, you must content index the messages.

You can run a content indexing job separately from an archiving job.

## Indexing Levels

### Basic Indexing

With basic indexing, you can search on the attributes of an archived item, such as subject, recipients, attachment name, date received, mailbox name, and email importance. By default, the contents of the message and the attachment are not indexed. This level of indexing is achieved by running a backup job or an archive job, not a content indexing job.

### Advanced Content Indexing

With advanced content indexing, you can search on the attributes of an archived item, such as subject, recipients, and attachment name. You can also search the message body and attachments and view previews, even when you are offline.

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