Does Shopify have abandoned cart recovery?

Yes. Shopify has a handy abandoned cart recovery process as follows:

1. Access your Shopify admin.
2. Click Settings > Checkout.
3. Hit Abandoned checkouts.
4. Press Automatically send abandoned checkout emails.
5. Click Send a cart recovery email.
6. Hit "Send To" to choose the audience for your email. It can be anyone who hasn't checked out, or it can be any email subscriber.

Furthermore, use "Send After" to specify how long Shopify should wait before sending an email.