I had hoped to be able to change the header of the email to make it more like a personal email and not SPAM, but it is currently beating me.
To get to your SPAM folder you will need to login to your email through a webpage. On Gmail it wasn't that obvious. On the left of the screen were some icons, which when you hover over them open up into a folder list. Slide down the list and there was a "More" option that displayed more folders including SPAM. Open the SPAM folder and mark any emails from: Lower Halstow Yacht Club as Not Spam. That should then move them into your normal inbox.
If you have any problems, let me know and I will set a temporary password for you.