IMAP
電子メールの受信サーバとアプリ間のやりとり
取得するだけのPOP3と比較して、サーバ側でメッセージを保管する方式。フォルダ管理などが可能
IMAP4が主流
TLS
RFC 8997 Deprecation of TLS 1.1 for Email Submission and Access
RFC 8996 Deprecating TLS 1.0 and TLS 1.1
RFC 8314 Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access → 8997
RFC 2595 Using TLS with IMAP4, POP3 and ACAP
RFC 9755 IMAP Support for UTF-8
RFC 9051 Internet Message Access Protocol (IMAP) - Version 4rev2
https://tex2e.github.io/rfc-translater/html/rfc9051.html
RFC 8553 DNS AttrLeaf Changes: Fixing Specifications That Use Underscored Node Names
RFC 8474 IMAP Extension for Object Identifiers
RFC 8437 IMAP UNAUTHENTICATE Extension for Connection Reuse
RFC 7888 IMAP4 Non-synchronizing Literals
RFC 7817 Updated Transport Layer Security (TLS) Server Identity Check Procedure for Email-Related Protocols
RFC 7377 IMAP4 Multimailbox SEARCH Extension
RFC 7162 IMAP Extensions: Quick Flag Changes Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization (QRESYNC)
RFC 6858 Simplified POP and IMAP Downgrading for Internationalized Email
RFC 6855 IMAP Support for UTF-8 → 9755
RFC 6237 IMAP4 Multimailbox SEARCH Extension → 7377
RFC 6186 Use of SRV Records for Locating Email Submission/Access Services → Update 8314, 8553
RFC 5738 IMAP Support for UTF-8 → 6855
RFC 5593 Internet Message Access Protocol (IMAP) - URL Access Identifier Extension
RFC 5550 The Internet Email to Support Diverse Service Environments (Lemonade) Profile
RFC 5182 IMAP Extension for Referencing the Last SEARCH Result
RFC 5162 IMAP4 Extensions for Quick Mailbox Resynchronization → 7162
RFC 5092 IMAP URL Scheme → Update 5593
RFC 5032 WITHIN Search Extension to the IMAP Protocol
RFC 4551 IMAP Extension for Conditional STORE Operation or Quick Flag Changes Resynchronization → 7162
RFC 4550 Internet Email to Support Diverse Service Environments (Lemonade) Profile→ 5550
RFC 4469 Internet Message Access Protocol (IMAP) CATENATE Extension → Update 5550
RFC 4467 Internet Message Access Protocol (IMAP) - URLAUTH Extension → Update 5092, 5550
RFC 4466 Collected Extensions to IMAP4 ABNF → Update 6237, 7377
https://www.rfc-editor.org/rfc/rfc4466
RFC 3516 IMAP4 Binary Content Extension → Update 4466
RFC 3502 Internet Message Access Protocol (IMAP) - MULTIAPPEND Extension → Update 4466, 4469
RFC 3501 INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 → Update 4466, 4467, 4469, 4551, 5032, 5182, 5738, 6186, 6858, 7817, 8314, 8437, 8474, 8966 → 9051
RFC 2683 IMAP4 Implementation Recommendations → Update 7162
https://tex2e.github.io/rfc-translater/html/rfc2683.html
RFC 2342 IMAP4 Namespace → Update 4466
(RFC 2244 ACAP -- Application Configuration Access Protocol)
RFC 2221 IMAP4 Login Referrals
RFC 2192 IMAP URL Scheme → 5092
RFC 2088 IMAP4 non-synchronizing literals → Update 4466 → 7888
RFC 2060 INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 → 3501
RFC 1939 Post Office Protocol - Version 3
RFC 1730 IMAP4
http://srgia.com/docs/rfc1730j.html
メールサーバとMUAがやりとりするプロトコルのひとつ
メールは基本的にサーバ側で管理する
POP3が単純だったものをもう少しいろいろできるようにしたもの