Being said above, customer retention is too important (and expensive) to overlook. That's why it is recommended that you should always stay in touch with your customers and provide them with relevant updates of your stores to keep them thinking about you as a top-of-mind option.
Once people have subscribed to your email list, keep them updated about promotions, sales events, and new arrivals.
But don't be spamming! People only want information that's relevant to them; otherwise, they will unsubscribe your notifications. Therefore, by using email marketing automation, you can easily create your cohort lists to only send announcements to relevant audience subsets.
There are two occasions that you need to send emails about product updates:
Since there seems to be a lot of campaigns that you need to follow, Mailbot by Beeketing can help you send personalized automation emails to follow-up each unique customer based on their behaviors on your store. Its Newsletter Bot can detect new products in your store then create a new arrivals campaign & promote them your customers every week. No more burden of picking new items and creating weekly newsletters yourself!