EmailSyntaxError: The part after the @-sign is a special-use or reserved name that cannot be used with email.

[sentry]

Sentry Issue: SERVER-436

EmailSyntaxError: The part after the @-sign is a special-use or reserved name that cannot be used with email.
(6 additional frame(s) were not displayed)
...
  File "polar/worker/__init__.py", line 90, in _wrapped_fn
    return await fn(*args, **kwargs)
  File "polar/email/tasks.py", line 18, in email_send
    await email_sender.send(
  File "polar/email/sender.py", line 105, in send
    to_email_addr_ascii = to_ascii_email(to_email_addr)
  File "polar/email/sender.py", line 27, in to_ascii_email
    validated_email = validate_email(email, check_deliverability=False)

[frankie567]

Fixed in #9515