This article applies to:
7.x Email Manager for Outlook
The default metadata columns that are displayed in outlook view are as follows: From (From), Subject (Title/Filename), Received (Date Modified)
The "FROM" field in Outlook will be mapped to the user who uploaded the file in SharePoint.
The "SUBJECT" field in Outlook will be mapped to the Title of the file in SharePoint. If Title isn't available, it'll be mapped to the FILENAME property.
The "RECEIVED" field in Outlook will be mapped to the modified date of the file in SharePoint.