Abinash has 'Allow Anonymous' configured for maileater, allowing emails that don't map to an existing contact to raise a ticket. Activity Notification rules won't work for such a ticket as the contact is always 'System_Anonymous'.
You can include the attributes of the new ticket in the 'Success Text' and 'Success HTML' text in a Mailbox Rule, in just the same way as you would in a Notification Message Template. Since the attributes are being accessed in the scope of a ticket rather than in the scope of an activity log record, the syntax to reference them is for example '@{web_url}' or '@{status.sym}' rather than '@{call_req_id.web_url}' or '@{call_req_id.status.sym}'. Use '<br>' tags to separate lines in the HTML text. The 'Notification Phrase' facility can also be used:
Choose a Notification Phrase - CA Service Management - 17.1 - CA Technologies Documentation
The Subject line for the maileater reply does not seem to process ticket attributes, so you'll have to use something generic like 'Service Desk auto-reply', as the same text is used on success and on failure.