[UA-EAI] some notes Re: EAI Reading Call

[Arnt Gulbrandsen]

Paul Borokhov writes:
> Isn’t this just an implementation detail? Why should (average) 
> users be exposed to it?

It's an entrenched implementation detail.

It's entrenched in both software and average users. The secretary at my 
children's school is a nice example. She has an Excel sheet with all the 
parents' email addresses. She expects that she can update that sheet with 
addresses she sees in parents' mail and also that the addresses are 
readable and understandable over the phone.

Lufthansa's customer service expects the same thing. Both that the 
addresses they see in my email are readable to me over the phone, and that 
an address I read to them over the phone is usable to send me mail.

And so on and so forth.

Jiankang wrote that some readers may prefer punycode. But that doesn't 
matter to senders, because some other readers reject punycode. Some 
customer service representative would see Don's new email address (from the 
attached screenshot) and say "Mr, Hollander, I'm afraid there appears to be 
an arror with your email address. Is tee oh aye at ex enn hyphen hyphen enn 
que pee you kay aye pee you kay aye dot enn zed correct? Do you perhaps 
have another address we can use?" Authors of software must assume that 
sending a punycoded address risks being rejected by some recipients.

Arnt
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