Prepare an Email Banner
From My Websites > Main > Customise Design > Site Header, upload your banner image as a JPG, GIF or PNG. We recommend a size of about 200 pixels in height. Your banner is displayed at the top of all your web pages and all image collections.
Need help? - The following tutorial will show how to create a great logo using photoshop or any other image editing software: How to create a logo in photoshop.
From your Site Header you may also upload your email banner — again, this is should be loaded as a JPG, GIF or PNG. We recommend a size of approximately 800 pixels wide and about 200 pixels height. Your banner is displayed at the top of all email sent from the system on your behalf. Ideally, you should include your web site address and all contact details on your email banner.