Recipient of the welcome mail is "None <mail-address>" if no name was entered in mass subscription
I've created a test list under Mailman 3 and subscribed my 2 addresses to it via mass subscribe. I've entered only addresses, not real names ("addr@domain.tld" instead of "Name <addr@domain.tld>"). On both addresses, I've received the expected welcome mail.
Issue: Recipient of the welcome mail is "None <mail-address>", which yields "None" as recipient name in my mail client (Outlook 2010).
I would assume that, since I did not enter any name, the mail should be addressed "To: addr@domain.tld" instead of "To: None <addr@domain.tld>".