Attachment + unicode char in subject/body = hangs with no response

[alexfilatov]

When we have attachment and ascii symbols in subject/body - everything is fine.

When we have something like this:

send_email(
        to: "some@emailaddress.com", 
        from: "some@emailaddress.com",
        subject: "Тестовое письмо",
        html: "Test body",
        attachments: [%{path: "mix.exs", filename: "mix.exs"}]
)

we get mailgun hangs with no response at all.

I added :httpc.set_options([{:verbose, :debug}]) to the client.ex right before calling :httpc.request and attached debug output for you.
Hope @chrismccord will find some time to fix it.
Thank you!

elixir 1.3.4

httpc_debug.txt

[AmenZhou]

I experienced the same problem.