SmarterMail provides detailed reports for your domain email service, such as:
Messsage Traffic - Total numer of messages on your account.
Hourly Messsage Traffic - Total numer of messages on your account account within an hour. See step 3
Here is the steps to check the details reports for entry domain name.
1 Login to postmaster account via web interface mail.yourdomain.com
Note: Please replace yourdomain.com as your actual domain name
2 Next to Reports/Domain Summary Reports, click Message Traffic to check it
3 By default, the report grouped daily. You can re-generate report to show it hourly