Mail Monitoring 
You use mail monitoring to check the status of sent e-mail, as well as any inbound e-mail. This can be particularly important when you are sending personalized mail as part of a campaign.
Display transmission data
You can see information including if the e-mail has been sent, is waiting to be sent, or if there are errors.
Use transaction SOST.
Recommendation
If your system does not display the Transmitted icon in the Status column, check whether your mail server sends a confirmation for successful delivery.
If your mail server does not deliver confirmations for successful delivery, you can specify that your SAP system does not wait for confirmations. In transaction SCOT, choose , then select SAPconnect does not expect receipt confirm. for Internet mail.
Display bounce data
The system writes information about each bounced e-mail in the application log. You can select a given time period in the log, display the GUIDs of the send requests, and display what actions were executed for each bounced e-mail.
On the SAP Easy Access screen, choose .
In the Object field, enter CRM_MKTB.
Display original outbound e-mails
With the GUID of a send request from the bounce data, you can display the original outbound e-mails.
On the SAP Easy Access screen, choose .
Use report CRM_EMAIL_MIME_DISPLAY.