Hi Stefano, I just discovered that if I edit a message in the visual editor and place a Newsletter-managed link-shortcut into a link – e.g. {email_url} or {unsubscribe_url} or any other – that the WYSIWYG editor prepends (adds) the website and Newsletter page URI to it. So, for example, the corresponding code in HTML source ends up looking like this:
<a href="http://www.example.com/newsletter/{mail_url}">linked text</a>
Of course, that should be instead:
<a href="{mail_url}">linked text</a>
In other words, I suggest adding a warning in the documentation, preferably next to those editor boxes, that adding such link-shortcuts MUST be done manually or at least manually verified in the source code. I understand that that’s the WYSIWYG editor intervening in an attempt to be “helpful” so that’s why I think a clarifying text in the documentation is a more practical solution.