Hi @loverofecommercelol
Thank you for posting your question in the Klaviyo Community!
You can certainly achieve this but ensuring that the data sync between Shopify & Klaviyo is two way. This is done under integrations.
I know you’ve mentioned that you have your Welcome Flow set up already in Shopify, but I would highly recommend investing the time in migrating this to Klaviyo. You’ve made an amazing choice already signing up and have started to utilize the Klaviyo features, but are only going to get the tip of the benefits.
Here is some useful pages to review on Welcome Email:
And a good source for Why Klaviyo:
Thank you again for your question, I hope my response helped 😊
Kylie