[UA-discuss] interesting to note about emoji in mailbox name.

Marc Blanchet marc.blanchet at viagenie.ca
Fri Apr 12 17:07:51 UTC 2019

On 12 Apr 2019, at 13:01, Larry Masinter wrote:

> What is missing is writing an actual statement that extracts from the 
> useful statements posted here bye various people a single statement 
> that squarely addresses the issue in the framework of email addresses 
> and that could be the formal position of UASG on why or to what degree 
> emoji fall outside the universal acceptance scope.

last communication from Andrew I think squared it well.

my 2 cents.


> BTW, the argument made by some people here that they represent an 
> "inferior form" (my term) of communication compared to natural 
> languages is rather weak and I prefer not to rely on it.
> The reason for avoiding emoji with color variants is that they are 
> easily confusable. The same reasoning applies equally to mailbox 
> names, domain names, and short URLs.
> By string I mean a sequence of Unicode code points. There are many 
> reasons why two different strings might, when rendered, look identical 
> or be difficult to distinguish (pointer-to-list)
> A simple measure of confusability for a  string is the degree to which 
> the process of attempting to transcribe a rendering of the sequence 
> would result in a different sequence. Transcription involves 
> recognizing the rendering of the string and being able to enter it.    
> Those requesting names or issuing them, whether DNS names or mailbox 
> names, SHOULD avoid names that are significantly confusable by a 
> significant population, including strings that represent multiple 
> scripts, emoji, or are unnormalized.  Applications using IDNs such as 
> email servers, web browsers etc. MAY flag e mail or URLs using such 
> names as potentially malicious.
> Perhaps some kinds of emoji are unambiguous and easily entered by most 
> and the guidance should change.
> --
> https://LarryMasinter.net

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