Archived Link 0.3 Requires Restart
by Shepazu
Archived Link displays the URL of the Archived-At email message header field (RFC-5064) as a hyperlink.
About this Add-on
There are options to open the link in a browser, to simply copy the link, and to selectively hide or show the link in the message header pane.
See my blog post about Archived Link for more detail, or to provide me feedback. Thanks!