1. create test.html with following:

2. open test.html with chromium and click on link

3. check mailbox of recipient@example.com :>

ymmv, but this can be fixed changing neomutt.desktop file:

I am not sure this is neomutt's fault or chromium's. It looks like the
root cause is xdg-open not respecting Terminal=true in neomutt.desktop.
There is an existing bug about that:

https://bugs.freedesktop.org/show_bug.cgi?id=92514

Wrapping the neomutt command in a terminal emulator works as a
workaround for this specific bug, but is a bad fix in general since it
would create a second, redundant terminal if launched from anything
other than xdg-open.

I thought mailto: links used to work for me in chromium... I am not sure
if something changed (probably in chromium) or if I imagined that.

BTW the reproducer can be even shorter: just enter
mailto:someone@example.com in the address bar.

Hi,

Cloning this bug and assigning the clone to mutt, because this also
affects stretch.  I can't believe it's taken me this long to try to
get mutt to handle mailto links.  It also has the potential to
embarrassingly spam the BTS if someone clicks the reply link more than
once (see #922951) :-$


Regards,
Nicholas

I'm able to reproduce this behavior in Firefox as well.

See proposed fix here:

https://salsa.debian.org/mutt-team/mutt/-/merge_requests/11

My proposed fix is sort of a workaround. The root issue here is an
xdg-utils bug which was addressed upstream here:

https://gitlab.freedesktop.org/xdg/xdg-utils/-/merge_requests/160