Created attachment 9241 migrate_goodies_url-mailwatch.patch The attached patch updates the URLs for xfce4-mailwatch-plugin from goodies.xfce.org to docs.xfce.org.
Kevin Bowen referenced this bugreport in commit 6b808c78b436d79f5a83153a0b39195a2949a18f Update URLs from goodies.x.o to docs.x.o (Bug #16167) https://gitlab.xfce.org/panel-plugins/xfce4-mailwatch-plugin/commit/6b808c78b436d79f5a83153a0b39195a2949a18f