Add Punycode converter for IDNA Domains and Email
A full-featured email creation and transfer class for PHP
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coolbru
When sending email to an internationalized domain for example: dömäin.de i get an INVALID ADDRESS error.
A (GNU) Converter is already available at http://phlymail.com/de/downloads/idna/download/ which could be implemented. I think nameprep is also missing.