For Fedora 29 and Rawhide:
https://copr.fedorainfracloud.org/coprs/mschwendt/claws-mail-testing/
If upgrading to these packages, be sure to upgrade also "libetpan"
and not only the "claws-mail*" packages.
As a side-note, the Dillo based HTML rendering plugin package
"claws-mail-plugins-dillo" is back with this release.