I’d like to set up functionality for the ‘Subscribe & Save’ checkbox on the standard product order. When a user selects this option, the product price should automatically update with the subscription discount applied. Additionally, I should receive a backend notification indicating a new subscription order has been placed.
Hi Harry, welcome to the community! 
The functionality you’re describing — where selecting a ‘Subscribe & Save’ checkbox dynamically updates the product price and triggers a backend notification — can definitely be implemented, but it requires custom scripting and access to Funnelish’s Advanced Plan.
If you’re comfortable with JavaScript, it’s doable with some effort. Otherwise, I recommend reaching out to Funnelish Live Chat Support — they can assist you further or connect you with someone who can help set this up.
Let us know if you have any other questions!