CM Email Tools Pro - Email Log
To log every outgoing e-mail go to Settings->General tab and check "Yes". If enabled, every e-mail will be saved in the Email Log.
To see logs, navigate to Admin Panel->CM Email Tools Pro->Email Logs.
Below: Example of how the items on a log look, specifically sent e-mails.
You can do the following bulk actions on e-mail logs: Edit or Move to Trash. If you do not need to move e-mail logs to trash, you can permanently delete them all with the button Delete All Log.
You can also filter e-mail logs by date.
Open single Email Log item to see its details.
Below: PHPMailer Settings during sending the e-mail.
Below: PHPMailer data that's logged are related to SMTP debug level in General tab.
Backtrace is a standard PHP call stack.
SMTP Connection Log
Below: Log string generated by the SMTP server.