How can it "suarprisingly work" if you need to safely embed an email address as an URI in a plain text document ? Yes there's way to worak with the IDNA part, but the local part is a challenge, that will require (to make it work) that the mail server will accept several aliased account names, depending on the document in which the address was embedded and encoded before being dereferenced and used to send mails.
There's no easy way to embed the local part in plain-text when it can be arbitrary sequences of bytes in the non-ASCII range, whose encoding in the target domain name is unpredictable without first querying the MX server for that domain for this info, or without retrying sending mails with several guesses: these guesses with retries may cause privacy issues for the legitimate owner of non-ASCII email accounts (another reasons for using email of verification/confirmation of the owner, before sending him private messages). 2013/10/31 Shawn Steele <[email protected]> > I think that’s true for non-ASCII non-EAI locale parts as well. It’s so > inconsistent its surprising when it works? >
