OPNsense repo by mimugmail
Here you'll find source of a couple of plugins but it's mainly just for tracking bugs or new feature requests.
You'll find everything else here: https://www.routerperformance.net/opnsense-repo/
Install this repo:
fetch -o /usr/local/etc/pkg/repos/mimugmail.conf https://www.routerperformance.net/mimugmail.conf
pkg update
Find out what is available in the (installed) repo:
pkg search -g -r mimugmail \*
Remove this repo:
rm /usr/local/etc/pkg/repos/mimugmail.conf
(removing the repo will not remove previously installed packages from the repo)
Find out what you have installed from this repo:
pkg query -a '%R %n-%v' | grep mimugmail