Returns the URL for the page that the e-mail from Email Marketing is based on.
The value is generated automatically.
The EmailMarketing/EmailMessaging tags are not rendered for a normal page that is not used with Email Marketing. The tags are only rendered when the page is used in the context of an email from Email Marketing.
You can e.g. use the tags in a design page template and assign it to the page that you want to use for the E-mail marketing newsletter.