Hi @avidagencyuk, welcome to the community!

If you want to link directly to the cart, or even the checkout page, the code and method to do this varies by your ecommerce platform. 

I’m going to take a big guess that you’re on Shopify, and if so, you can use Shopify’s URL method that can add an item to a cart (or multiple items to the cart) from a link here - they call this the “cart permalink” 

• Shopify.com : Cart permalinks

@stephen.trumble shared this in a previous thread that you may want to try if you just want a button that adds every item to their cart:

{{ organization.url }}/cart/update?{% for item in event.extra.line_items %}updatese{{ item.variant_id }}]={{ item.quantity|floatformat:0 }}{% if not forloop.last %}&{% endif %}{% endfor %}

If you want to also apply a discount code, you can reference this document here:

• How to add link that applies a coupon code to a Shopify cart

If you’re using another platform, some of them has their own methods to add items to the cart as well.