Personalization functions: linkpdf
The linkpdf tag can be used to construct a link to an existing pdf file. First a document or template matching the given template or document must be found. It is then converted to a link, which is automatically escaped, unless indicated otherwise.
Example
{linkpdf document="mypreviousmailing" escape="true"}This only outputs the link, but of course you can put this in a nice HTML hyperlink or use it in any other way.