👍 to add link to Piwik in the email.

It should also be do-able to add the info as a PDF property

maybe some users will want to disable displaying the Piwik URL, but we can wait to see if anyone requests this.

If I see correct current text is

Hello,
Please find in attached file your weekly report for $reportName.

So we'd add something like This report was sent from $piwikUrl. ?

Yes, link to the root URL of the Piwik site generating the report (not to piwik.org!).

FYI: I tried to set custom properties/metadata in the generated PDF report for quite a while but didn't get it working. There is this method setExtraMP() to set custom metadata but I couldn't find a single example on what to set there: https://github.com/tcpdf-clone/tcpdf/blob/master/tcpdf.php#L9492 . It probably should be some kind of </df:RDF> elements... if it is important I can invest more time

If adding as a PDF property, I think it would be better to add the URL to the PDF Producer element. Though this seems like it could be a security risk if the URL to Piwik is meant to be private? The file could be forwarded to someone who shouldn't know of the URL.

Here is how it looks like:

The file could be forwarded to someone who shouldn't know of the URL.

that's good point, maybe we should be careful with hiding the piwik url within document.

@MagicFab i'll close issue as done for now, thx for suggestion