poplib.POP3_SSL and poplib.POP3 initialized with wrong kwarg
There is a typo in email_sources.py#L280 and also in email_sources.py#L283
post=self.port
is used, which will not work.
There is a typo in email_sources.py#L280 and also in email_sources.py#L283
post=self.port
is used, which will not work.