Open the QueueLogs database using IBM Lotus Notes Domino Designer.
Browse to 'Code --> Agents' and double click on 'Agents'
From the agents list select the agent 'MailSendOnEveryQLogCreatedToCustomer' and click 'Enable'
Select the server from the dialog prompted and click 'OK'
By performing the above stepts, the agent to mail chat transcripts to the customer will be enabled.
This agent will run every time a log document is created and if it has valid customer email address, chat transcript will be mailed to that email address.