UnicodeEncodeError in exception message

[fdemmer]

The errmsg constructed in parse_address_list() causes an exception, when any of the addresses contains a non-ascii character, because of the non-unicode string in ", ".join(address_list_strings). This is only triggered, when there is an invalid email address in the list.

• Anymail version: 5.0
• ESP: Mailjet (but not relevant to issue)
• Versions of Django 1.11.20, requests 2.20.1, python 2.7.16
• Exact error message and/or stack trace

UnicodeEncodeError: 'ascii' codec can't encode character u'\xc4' in position 114: ordinal not in range(128)
[...]
  File "django/core/mail/message.py", line 348, in send
    return self.get_connection(fail_silently).send_messages([self])
[...]
  File "anymail/backends/base.py", line 95, in send_messages
    sent = self._send(message)
  File "anymail/backends/base_requests.py", line 60, in _send
    return super(AnymailRequestsBackend, self)._send(message)
  File "anymail/backends/base.py", line 124, in _send
    payload = self.build_message_payload(message, self.send_defaults)
  File "anymail/backends/mailjet.py", line 27, in build_message_payload
    return MailjetPayload(message, defaults, self)
  File "anymail/backends/mailjet.py", line 86, in __init__
    auth=auth, headers=http_headers, *args, **kwargs)
  File "anymail/backends/base_requests.py", line 148, in __init__
    super(RequestsPayload, self).__init__(message, defaults, backend)
  File "anymail/backends/base.py", line 275, in __init__
    value = converter(value, field=attr)
  File "anymail/utils.py", line 163, in parse_address_list
    where=" in `%s`" % field if field else "",

[medmunds]

Thanks for the report.

[medmunds]

Fix released in Anymail 6.0.1