What makes you think Mail::RFC822::Address cannot deal with e-mail addresses that contain non-ASCII characters? 
use strict;
use charnames ':full';
use Mail::RFC822::Address qw(valid);
use Encode::Punycode;
use Encode;

my $email_address = "\N{ARABIC SIGN SALLALLAHOU ALAYHE WASSALLAM}" . '
+@' . "\N{CYPRIOT SYLLABLE TA}" . 'be';
my $puny = encode('Punycode', $email_address);
print "$puny\n";
print "That's a valid unicode address\n" if valid($email_address);
print "That's a valid Punycode address\n" if valid($email_address);

[download]
Output:
xn--@be-0we00514a
That's a valid unicode address
That's a valid Punycode address

[download]
Update: added Punycode representation.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

In reply to Re: international domain names and email validation by CountZero
in thread international domain names and email validation by vkhera

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