When creating a new e-mail template, select the module from Available Merge Fields, which lists the available fields in that module. Select a field to populate Copy Merge Field Value. Copy the html code and paste it in the E-mail template body and ...
Yes, when a customer has sent more than one e-mail for an issue with different details in each mail, then you can merge these requests into one and work on a single request. You can even merge two requests from different contacts if need be. To learn ...
To customize default e-mail templates, Goto Setup> Templates > Email Templates > edit the template and make changes > Click Save. For more refer Templates