A few things can influence email delivery.
1. The Data Import may still be processing. Check its status in the Data Import list window or open its Processing Report to review processing stage details. See the topic Review Processing Details For A Data Import.
2. An email address might not be specified for your user profile in Stratum.Viewer. An administrator can check your profile and verify it has an email defined for it.
3. The email may have been routed to your Junk email folder instead of your Inbox.
If you are an administrator who was expecting email notifications every time someone processes an import, settings in System Configuration must be set up first to support those emails. See the topic Send Automatic Email Notifications About The Processing of Data Imports.