In-Reply-To

E838085

In-Reply-To is an email header field used to indicate which earlier message a given email is replying to, enabling proper threading and conversation tracking.

Jump to: Statements Referenced by

Statements (32)

Predicate Object
instanceOf email header field
message header field
appearsIn email message header section
category email header
dataModelRole link between child and parent messages
definedIn RFC 2822 NERFINISHED
RFC 5322 NERFINISHED
RFC 822 NERFINISHED
enables displaying conversation hierarchies
grouping related messages into threads
fieldName In-Reply-To
governingBody IETF NERFINISHED
hasPurpose indicate which earlier message an email is replying to
support conversation tracking
support email threading
introducedFor linking replies to original messages
isOptional true
processing used by clients to reconstruct reply chains
protocolLayer application layer
relatedField References
relatesToField Message-ID
scope message metadata
semantics identifies the parent message of a reply
standardStatus Internet standard
typicalUsage set automatically by email clients when replying
usedBy email clients
mail user agents
mailing list software
usedFor thread reconstruction when References header is missing or incomplete
usedInProtocol Internet email
valueSyntax one or more message identifiers in angle brackets
valueType message identifier

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

RFC 5322 definesHeaderField In-Reply-To