ALL
All messages in the mailbox.
ANSWERED
Messages with the \Answered flag set.
BCC
Messages that contain the specified string in the envelope
structure’s BCC field.
BEFORE
Messages whose internal date (disregarding time and timezone)
is earlier than the specified date.
BODY
Messages that contain the specified string in the body of the
message.
CC
Messages that contain the specified string in the envelope
structure’s CC field.
DELETED
Messages with the \Deleted flag set.
DRAFT
Messages with the \Draft flag set.
FLAGGED
Messages with the \Flagged flag set.
FROM
Messages that contain the specified string in the envelope
structure’s FROM field.
HEADER
Messages that have a header with the specified field-name (as
defined in [RFC-2822]) and that contains the specified string
in the text of the header (what comes after the colon). If the
string to search is zero-length, this matches all messages that
have a header line with the specified field-name regardless of
the contents.
KEYWORD
Messages with the specified keyword flag set.
LARGER
Messages with an [RFC-2822] size larger than the specified
number of octets.
NEW
Messages that have the \Recent flag set but not the \Seen flag.
This is functionally equivalent to “(RECENT UNSEEN)”.
NOT
Messages that do not match the specified search key.
OLD
Messages that do not have the \Recent flag set. This is
functionally equivalent to “NOT RECENT” (as opposed to “NOT
NEW”).
ON
Messages whose internal date (disregarding time and timezone)
is within the specified date.
OR
Messages that match either search key.
RECENT
Messages that have the \Recent flag set.
SEEN
Messages that have the \Seen flag set.
SENTBEFORE
Messages whose [RFC-2822] Date: header (disregarding time and
timezone) is earlier than the specified date.
SENTON
Messages whose [RFC-2822] Date: header (disregarding time and
timezone) is within the specified date.
SENTSINCE
Messages whose [RFC-2822] Date: header (disregarding time and
timezone) is within or later than the specified date.
SINCE
Messages whose internal date (disregarding time and timezone)
is within or later than the specified date.
SMALLER
Messages with an [RFC-2822] size smaller than the specified
number of octets.
SUBJECT
Messages that contain the specified string in the envelope
structure’s SUBJECT field.
TEXT
Messages that contain the specified string in the header or
body of the message.
TO
Messages that contain the specified string in the envelope
structure’s TO field.
UID
Messages with unique identifiers corresponding to the specified
unique identifier set. Sequence set ranges are permitted.
UNANSWERED
Messages that do not have the \Answered flag set.
UNDELETED
Messages that do not have the \Deleted flag set.
UNDRAFT
Messages that do not have the \Draft flag set.
UNFLAGGED
Messages that do not have the \Flagged flag set.
UNKEYWORD
Messages that do not have the specified keyword flag set.
UNSEEN
Messages that do not have the \Seen flag set.