IETF - RFC 5738
IMAP Support for UTF-8
|Publication Date:||1 March 2010|
This specification extends IMAP4rev1 [RFC3501] to permit UTF-8 [RFC3629] in headers as described in "Internationalized Email Headers" [RFC5335]. It also adds a mechanism to support mailbox names, login names, and passwords using the UTF-8 charset. This specification creates five new IMAP capabilities to allow servers to advertise these new extensions, along with two new IMAP LIST selection options and a new IMAP LIST return option.