OS: Debian GNU/Linux buster/sid (x86_64)
Even in Firefox it is possible to run "xterm -e mutt" as external mail-client and clicking on a mailto-link, the referenced address will be pasted alright into the mailer-interface.
If you know of a way to do this with the current opera-release for Linux, I'd be thankful for any hints.
The information which appears to have circulated a few years ago, is no longer valid. Something definite from Opera Software would be appreciated, the FAQs and other “official” documentation seems bereft of any mention of external mail-client.
Correct me, PSE, if you can.