Hi, @noorul1208 .
Greetings, and thanks for posting to the forums!
This is a great marketing strategy to retarget your customers! Currently, there is no simple way to do this natively in Shopify without coding this directly into the confirmation email template. That being said, I will absolutely submit this as a feature request on your behalf. I can only imagine how many merchants this would help!
That being said, you can set this up by using an email app such as Privy, or Klaviyo. These apps essentially take over your store’s email functionality. You can set them up to send your order confirmation emails, marketing materials, discounts and more. They are extremely easy to use, and let you build out amazing branded emails.
If you are a beginner in the ecommerce space, I would recommend Privy over Klaviyo as it is more user friendly. Additionally, it also lets you create some amazing pop ups for your store!
In the meantime, I would love to learn more about your store to see what other support I can provide. Feel free to provide your domain so I can take a peek!