I have a hard time believing that the 300M Chinese on the net have an email address spelled with ascii characters, but I just checked with our Exchange server here and on gmail, and both refused a single accented letter in the user name.
So you are right about restricting it.
As for the “smaller field smaller db” excuse, utf8 is the same as ascii as long as you use strictly ascii characters. Also, the last I heard that excuse was for putting centuries in dates, thus saving 2 bytes for each date. We all know where that got us :)From: email@example.com [mailto:firstname.lastname@example.org] On Behalf Of Ruslan Zakirov
Sent: July 28, 2008 14:29
To: Mathieu Longtin
Subject: Re: [rt-users] RT3.8 upgrade: forcing ascii email addresses?
Nope, they can not. Only comment and phrase parts of addr_spec can,
but address itself can not.
However, may be soon we’ll see international domains and situation
could be changed, but at this point I think it’s better to stick with
ASCII. Smaller fields - smaller indexes - smaller DB.