In gitgitgadget/git#20, GitGitGadget claimed to have sent the mails, but they were returned to sender because AEvar's name requires special encoding. In particular, the header should look like this:

Cc: =?utf-8?B?w4Z2YXIgQXJuZmrDtnLDsA==?= Bjarmason <avarab@gmail.com>

(see e.g. https://public-inbox.org/git/20180816224138.GA15490@sigill.intra.peff.net/raw for an example)

I was under the assumption that https://github.com/nodemailer/nodemailer/blob/ed3dc4d7b8e0ad3737fa2badfe658f5a36329934/lib/mime-node/index.js#L811 would convert things correctly, but I guess that does not take care of the raw mbox.

And now I am unsure whether I can use that encoded Cc: header in the mbox, lest nodemailer does not handle that correctly when I pass such an encoded string in the cc array.