https://app.kbone.net/vault/rfc/docid/7469
RFC6858: Simplified POP and IMAP Downgrading for Internationalized Email
Internet Engineering Task Force (IETF) A. Gulbrandsen Request for Comments: 6858 March 2013 Updates: 3501 Category: Standards Track ISSN: 2070-1721 Simplified POP and IMAP Downgrading for Internationalized Email Abstract This doc...