In Firefox, File/Email Link... will open a new TB message with the current link in the body and the page title in the Subject. Press Alt to show the Menu Bar with Edit. An Email Link button can be dragged onto the Toolbar by right-clicking the toolbar, Customize...

I cannot find the Firefox, Edit/Email Link and so cannot get any further. Thank you for advising.

I have moved your topic to the Firefox forum. Perhaps someone there can instruct you on how to use it.

I cannot find the Firefox, Edit/Email Link and so cannot get any further. Thank you for advising.

Press Alt to show the Menu Bar with File, in Firefox or TB. (First reply corrected, File instead of Edit.)