abandon checkout email for shopify(avoid email going to spam or promotion)

write an email for abandon checkout for shopify(avoid  email going to spam or promotion). We want to an email for abandon checkout customers, however this email should avoid going to spam and promotion. So normal and usual words must be used. Otherwise any keywords will be detect, and the email will go to spam or promotion. Email context will be related to recalling customers who have subscibe our email but did not put order in cart.