Once you automate Shopify store sales, you can monitor the following metrics to evaluate the impact:
Conversion rate. Track if automation has influenced the number of users completing purchases on your store.
Average order value. See if automation impacts the average amount customers spend per order.
Customer lifetime value. Measure the total revenue you get from a customer throughout their relationship with your brand.
Abandoned cart rate. Check how automation of abandoned cart reminder emails affects the rate at which customers abandon their carts.