For the email template, we need to see your email template to see more if it is able to be customized or not. About sender email address, it will be your email sender email address. You just need to give us information that we need for our configuration. 

- Email address: 

- Password: 

- SMTP Host: 

- SMTP Port: 

- Authenticated: 

- Yes or No Enable Option: None or STARTTLS or SSL