If you would like to add your logo to the emails sent by CentralPlanner (e.g. booking confirmations), you can do this as follows:
Go to Name & address, language & more in your Account settings.
Under the address you will find the "Logo" section with an option to upload it. Save afterwards.
Back in the Account settings, you will find the Notifications & emails item.
Under "Edit outgoing emails", click the button and edit the email(s) you'd like to contain your logo.
Click Save and show preview.