The zlib test fails #123

I'm using HEAD version of rss2email running from clean venv. Today I noticed an error in feed.py:

elif isinstance(exc, _feedparser.zlib.error):

I went to take a look at what changed in kurtmckee/feedparser and sure enough, they released a new version.
Reverting to 6.0.0b3 via pip install feedparser==5.2.1 (last release, 5 years old) made rss2email run.

kurtmckee/feedparser@5739f66

EDIT: I just realized I'm using rss2email/rss2email repository this might be non-issue in your fork. I'm sorry