thread(algorithm, search_keys, charset)
Instance Public methods
As for search(), but returns
message sequence numbers in threaded format, as a Net::IMAP::ThreadMember
tree. The supported algorithms are:
ORDEREDSUBJECT
split into single-level threads according to subject, ordered by date.
REFERENCES
split into threads by parent/child relationships determined by which
message is a reply to which.
Unlike search(),
charset is a required argument. US-ASCII and UTF-8 are sample