Fedora 30's rss2email-2.71-16 requires python2-html2text. Unfortunately, the python-html2text maintainers have just pushed an update which causes its python3 variant to obsolete and uninstall the python2 variant, though the two were completely capable of being installed alongside each other, even if the python2 variant were going to receive no further updates. This renders your package unable to be installed on a machine along with the newest python-html2text. Though I've opened another bug asking the python-html2text maintainers to drop the Obsoletes in F30 (RHBZ#1797164), perhaps you can more easily get an rss2email that's python3-ready into F30.
that is unfortunately not easily possible without breaking existing installations. I've decided to upgrade for fedora 31 to 3.9, which brings not only proper python3 support, but also a new config file and cache location and therefore needs manual intervention - otherwise rss2email will stop working. if I do that for fedora 30, this will render rss2email non-functional without any apparent reason outside of a sysupgrade. i'd prefer that the obsolete would be fixed, but if that doesn't work I might have to integrate the html2text-code into this package.
FEDORA-2020-f0f1921537 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2020-f0f1921537
python-html2text-2019.9.26-3.fc30 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-f0f1921537
FEDORA-2020-3bf2bd8e87 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2020-3bf2bd8e87
FEDORA-2020-b8692ee463 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2020-b8692ee463
python-html2text-2019.9.26-5.fc30 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-b8692ee463
python-html2text-2019.9.26-5.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report.