Cited in: RFC 8457

7 RFCs mentioned in the text of RFC 8457 (IMAP "$Important" Keyword and "\Important" Special-Use Attribute)

RFC	Title	Status	Date
3501	INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1M. Crispin · obsoleted by RFC 9051	Proposed Standard	March 2003
5234	Augmented BNF for Syntax Specifications: ABNFD. Crocker, Ed., P. Overell	Internet Standard	January 2008
5258	Internet Message Access Protocol version 4 - LIST Command ExtensionsB. Leiba, A. Melnikov	Proposed Standard	June 2008
5788	IMAP4 Keyword RegistryA. Melnikov, D. Cridland	Proposed Standard	March 2010
6154	IMAP LIST Extension for Special-Use MailboxesB. Leiba, J. Nicolson	Proposed Standard	March 2011
7841	RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed.	Informational	May 2016
8126	Guidelines for Writing an IANA Considerations Section in RFCsM. Cotton, B. Leiba, T. Narten	Best Current Practice	June 2017