The Email Log will show a list of all emails which have been delivered successfully. Here's where to find it.
System Monitor - Email Log
- Go to System Monitor.
- Select Email Log.
The email log will show a list of all emails which have been delivered successfully. You can double click on an email to bring it up in an email client as well as search for a specific email using the search field.
This functionality works for emails sent by SMTP. For Exchange or Office 365 setups, successful emails will be shown in the "Sent Items" folder of the email account that was used to send the email.