You should be able to change it from the settings > notifications menu in the admin, however might need to use a app or something to change the image for each individual email you sent out.
Topic summary
Goal: Show the specific gift card design (the product image) in the email sent after a gift card purchase.
Current behavior: The email only displays Shopify’s default gift card image, or a single hard-coded image if the template is edited. It does not automatically use the purchased gift card’s product image.
Suggested options:
- Adjust the image in Admin > Settings > Notifications to change the default image used in gift card emails.
- For per-design/per-product images in each email, an app or custom solution may be needed to swap images dynamically.
Status: No confirmed built-in method was provided for pulling the exact product image per gift card automatically. The thread remains open with a tentative direction (notifications settings or third-party app) but no definitive resolution.