Hi LISA86,
The issue may occur due to the application you use to view the emails. The results may be different when you view the emails using Microsoft Outlook or Web application provided by the email server. You can also try different format of the report when creating
the subscription or use external images instead. In this way, we can find out whether the issue is related to the Reporting Services or the email viewer application.
Reference:
Embedded images are not coming in WEB ARCHIVE (MHTML) Subscriptions reports
Regards,
Mike Yin
TechNet Community Support
