May I quote from the 2 March 2018:

...what we agreed to is that emojis are not part of the current standard for IDN/DNS. As such it is out of scope for UASG.

Lars

Von: UA-discuss <ua-discuss-bounces@icann.org> im Auftrag von Dr Ajay Data <ajay@data.in>
Datum: Donnerstag, 11. April 2019 um 09:10
An: universal access <ua-discuss@icann.org>
Betreff: [UA-discuss] interesting to note about emoji in mailbox name.

Some Interesting things to note:

I am testing with Two working Valid Email Address with heart shape..
❤@data.in and ♥@data.in 

( ❤ - xn--qei    and    ♥ - xn--g6h )

When I receive email from the above ID`s, In mobile devices these above hearts are shown in different red shades. 

However If I send email to Gmail / Outlook, they consider this as  Spam.  Not only spam, Gmail displays the following warning. - 

This message seems dangerous

The sender’s email address uses abnormal characters, which might be used to spoof real addresses. Avoid clicking links, downloading attachments, or replying to this message.

Probably, we need to discuss this too and have our views around it. 

Dr. Ajay Data
Founder & CEO

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