RE: "International" email addresses

This may not be in the form you want it, but maybe you'd find it helpful. 

As John said, the domain rules are completely different, requiring IDN validation.  The local part is "just" allowing everything >= U+0080.


-----Original Message-----
From: Steven Pemberton [] 
Sent: Wednesday, November 19, 2014 7:54 AM
To: Steven Pemberton; Anne van Kesteren
Cc:; Forms WG
Subject: Re: "International" email addresses

On Wed, 19 Nov 2014 11:06:52 +0100, Anne van Kesteren <>

> On Wed, Nov 19, 2014 at 11:00 AM, Steven Pemberton 
> <> wrote:
>> So as far as I can see, an internationalised email address is:
>>  address: atom-list "@" atom-list.
>>  atom-list: atom ( "." atom )*
>>  atom: C+
>>  C: any character in the world EXCEPT (),.:;<>@[\]
>> a) Do you agree?
>> b) It was really hard to find this out. The internet is rife with 
>> people asking and getting bad answers. Please help the internet by 
>> being definitive.
> I recommend matching HTML's definition:

Unfortunately, that doesn't match our minimum requirement of accepting international addresses.


Received on Wednesday, 19 November 2014 18:10:02 UTC