This is Martha from the Shopify Guru Team.
There are automated Abandoned checkout options directly accessible from the Shopify Admin. You can access these notifications under Settings > Notifications > Abandoned checkout. This can then be edited and previewed. More details about how to do this here. These notifications are made using HTML, so, you might be able to finesse the content to your liking.
General info about our Abandoned checkouts available in this help doc.
Mailchimp documentation for Abandoned cart integration can also be found on their site, check out this post!
Hopefully, these methods and resources will point you in the right direction for what you had in mind! If you need any more help or have questions in the future, let us know!