[Email Routing]Support International Email

Hello,

I want to know if Cloudflare will support International Email?

International email arises from the combined provision of internationalized domain names ( IDN )[1] and email address internationalization ( EAI ).[2] The result is email that contains international characters (characters which do not exist in the ASCII character set), encoded as UTF-8, in the email header and in supporting mail transfer protocols.——Wikipedia

Best Regards,
wordlesswind

Although Email Routing seems to support the creation of international email addresses, when trying to use Gmail to send mail to this address, it prompts: local-part of envelope RCPT address contains utf8 but remote server did not offer SMTPUTF8

I have also come across this issue. Bounce message from outlook.com states this:

For Email Admins
This issue occurred because the message was sent using the UTF-8 character set, which the receiving email system doesn’t support. […] you can ask the recipient’s email admin to configure their mail server to advertise support for SMTPUTF8, as specified in RFC 6531.

Remote Server returned ‘550 5.1.17 SMTPSEND.Utf8RecipientAddress; UTF-8 recipient address not supported.’

Here is the mentioned RFC: RFC 6531 - SMTP Extension for Internationalized Email

Is this intended?
If you need any help with reproducing the issue, I am happy to help.

International email are currently not supported but it’s on our roadmap.

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