Mail::SpamAssassin::Message::Metadata(3pm)
NAME
Mail::SpamAssassin::Message::Metadata - extract metadata from a message
SYNOPSIS
DESCRIPTION
This class is tasked with extracting "metadata" from messages for use
as Bayes tokens, fodder for eval tests, or other rules. Metadata is
supplemental data inferred from the message, like the examples below.
It is held in two forms:
- 1. as name-value pairs of strings, presented in mail header format.
For - example, "X-Language" => "en". This is the general form for simple
metadata that's useful as Bayes tokens, can be added to marked-up
messages using "add_header", etc., such as the trusted-relay infer - ence
and language detection. - 2. as more complex data structures on the $msg->{metadata} object.
This
is the form used for metadata like the HTML parse data, which is - stored
there for access by eval rule code. Because it's not simple - strings,
it's not added as a Bayes token by default (Bayes needs simple - strings).
PUBLIC METHODS
- new()