So folders in an account are an encrypted element. They'd essentially have to login to your account to view that folder. The archive widget is meant to help streamline some of that process, but does have limitations. Ultimately the best / only way to really go about what you're describing would be to simply copy the email's share URLs and add them to your website in some way - such as having a dedicated webpage for a specific type of email you want your visitors to see.
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