those arguments with addresses extracted from the headers of *msg* as
specified in :rfc:`5322`\: *from_addr* is set to the :mailheader:`Sender`
field if it is present, and otherwise to the :mailheader:`From` field.
- *to_adresses* combines the values (if any) of the :mailheader:`To`,
+ *to_addrs* combines the values (if any) of the :mailheader:`To`,
:mailheader:`Cc`, and :mailheader:`Bcc` fields from *msg*. If exactly one
set of :mailheader:`Resent-*` headers appear in the message, the regular
headers are ignored and the :mailheader:`Resent-*` headers are used instead.