My take: looking at the page I see video, text, weather, faq, trial flights, costs, competitions, learning, gallery, join, contact, learning, the club, search, advertisement, links to gliding pages, 10+ links to blog pages, upcoming events, support & fundraising.
Reading another answer about cognitive overload, I agree, that it is a little intimidating.
I'd say you need to sit down and have a serious group think about what kind of experience you want to give to the user. Namely, it reminds me of this:
To answer more directly: to minimize the number of emails you get, you need to minimize overwhelming the user with information, and find ways to present relevant information at relevant time during the user experiencing their journey throughout the website.
One question to ask yourself that may help is "is this website text/image/video/block right here absolutely needed and required to be on this very page in this spot, or can I remove it with the user still getting the main experience that I want them to have"? Remove and move blocks accordingly.
You may need to do some user testing. What do most users come to the site for? Is it just one thing, possibly two different things, or are they really going for a bit of everything? If 80% of users flock to one, two, or three things on the website, put those things first and foremost, put everything else away, including links, images, videos, and text, and have a link directing them to "everything else".
Side-note: having too much email is a great problem to have. You are getting some serious user hits! Next step is profit!