Can a Guest check out buyer receive messages from the seller since the Guest buyer has no account?

Iâ€™m sure they can, Iâ€™ve sent messages to buyers who checked out as a guest but they never respond. Messages usually go to the recipients email as well as messages in eBay. Iâ€™m guessing the email ends up in the spam folder or the buyer just doesnâ€™t reply. ETA UPDate: upon reading the Guest account policy they would need to create an account in order to receive messages.