1. Go to Communications > Email
  2. Hover over your email campaign and click on Manage
  3. Hover over the mailing name you want to report on and click Reports
  4. From the Reports screen, you can click "View Report" next to specific items
  5. Click "View Report" next to "Total Emails Sent Successfully"

    Note: All emails to receivers are not sent simultaneously as they are sent in a queue. The number of successfully sent emails may increase over a period of time until the email is completely sent to all receivers. Check the report periodically until the email is complete.