I have searched and found several threads asking for this featrure to be implemented - being able to auto add a free gift to cart isn’t excatly a groundbreaking idea - the current Buy X get Y discount relies on the customer adding both items to cart before the discount is applied which is clunky and inevitably leads to orders going out without the free gift leading to additional shipping costs - how hard can it be for Shopify to tweak the Buy X get Y feature so that the free item is added automatically? Our old CS Cart ecommerce software had this feature and most others also seem to.
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This is a problem that we have solved for Shopify plus merchants. If you are a plus merchant - feel free to reach out and we can have it setup for you in no time 
For non plus users - checkout extensions are not a supported feature. Might be that Shopify releases a solution for this in the future/ decides to support auto add to cart for bxgy.
It’s only now that more advanced discounts are even possible on the platform. Previously as a merchant you’d be stuck with only Fixed / % off on product / order.
Pretty sure they’ll take the feedback and improve.
Hi @JamesB_3 
I’m Ellie, a Promotion Expert with 4 years of experience!
I totally understand your frustration, and I’d highly recommend trying the BOGOS app as an alternative and more effective solution:
- We offer auto-add gift to cart, covering everything from basic needs to advanced features.
- If you’re offering discount gifts and want customers to choose from them (a great way to upsell), we have a gift slider pop-up option. No manual search for and add gift to cart.
- We have many promotional tools to boost visibility and help convert customers with your offers.
- Combine gifts with bundles, upsells, and discounts to keep your promotions fresh and attract a variety of customers, as each has different tastes.
I bet BOGOS can solve almost all of your gift and promotional needs! Utilize your 7-day free trial here to try it out and see the difference for yourself.
I truly hope my recommendations help. Appreciate it if you could Like and Accept as Solution if my answer was helpful!
@JamesB_3 , Since quite some time has passed since you raised this thread, I’m assuming you’ve already reached at a solution
If so - can you please share the same and close this thread out so that others who stumble here might also find value.
Best,
Hi @JamesB_3 
,
This is a common limitation with Shopify’s native “Buy X Get Y” discount. The free gift doesn’t appear automatically in the cart or at checkout and usually requires the customer to add it manually.
If you want a smooth workaround, you can try Monk, which was built specifically for complex free gifting. I’m part of the Monk team, here’s how you can make it work seamlessly.
Monk automatically adds the free gift to the cart once the qualifying conditions are met, without requiring the customer to manually add it. You can set up rules based on cart value, products, or collections, and even let shoppers choose their gift from a customizable widget if you prefer.
It integrates cleanly with your existing theme and cart, supports multiple currencies and regions, and doesn’t interfere with other store functions. Many merchants use Monk to fix this exact limitation while keeping their checkout flow simple and consistent.