The new custom code editor no longer appears to support 1) text-only versions of emails, and 2) a checkbox that adds a "Have trouble viewing this email? Click here" link to custom emails. We need both for our custom email campaigns. We've found where we can get to the old custom code editor (where these features are still available), but if this old editor gets phased out, we will no longer be able to access these features. Can you add them to the new custom code editor?