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Here are the commands to create a summary for the current IMAIL folder. Once the IMAIL folder has a summary buffer, changes in the IMAIL folder (such as deleting or expunging messages, and getting new mail) automatically update the summary.
imail-summary).
imail-summary-by-flags).
imail-summary-by-recipients).
imail-summary-by-topic).
imail-summary-by-regexp).
The h or C-M-h (imail-summary) command fills the
summary buffer for the current IMAIL folder with a summary of
all the messages in the folder. It then displays and selects the
summary buffer in another window.
C-M-l flags <RET> (imail-summary-by-flags) makes
a partial summary mentioning only the messages that have one or more of
the flags flags. flags should contain flag names separated
by commas.
C-M-r rcpts <RET> (imail-summary-by-recipients)
makes a partial summary mentioning only the messages that have one or
more of the recipients rcpts. rcpts should contain mailing
addresses separated by commas.
C-M-t topic <RET> (imail-summary-by-topic) makes
a partial summary mentioning only the messages whose subjects have a
match for the regular expression topic.
C-M-s regexp <RET> (imail-summary-by-regexp)
makes a partial summary mentioning only the messages whose headers
contain a match for the regular expression regexp. This match
includes all lines in the header, including for example the date and
from lines.
Note that there is only one summary buffer for any IMAIL folder; making one kind of summary discards any previously made summary.
There are several variables that affect how summaries are displayed.
imail-summary-height controls the height of the summary window.
If it is an exact positive integer, the summary window is that many
lines high. Alternatively, if it is a real number between 0 and 1
exclusive, the height of the summary window is computed by multiplying
the number of lines in the message window by imail-summary-height
and rounding to the nearest integer.
If the variable imail-summary-fixed-layout is set to #t,
then an IMAIL message buffer and its associated summary buffer
are always shown in a fixed window layout (provided the summary buffer
exists). Selecting either buffer causes all other windows in the
current editor frame to be deleted, then splits the frame into two
windows showing the summary buffer and message buffer. Selecting any
other buffer when this layout is displayed causes both windows to be
deleted, and the other buffer displayed in a single window filling the
editor frame. Basically, this causes the message and summary buffers to
be treated as a unit most of the time. Currently, the default for
imail-summary-fixed-layout is #f, but the feature has been
very popular and the default may be changed to #t in a future
release.
When fixed layout is not used, the variable
imail-summary-pop-up-message provides a different kind of window
splitting for message and summary buffers. If this is set to #t
(the default), then selecting a new message in the summary buffer causes
the message buffer to be popped up in a new window if it isn't already
visible.
If the variable imail-summary-highlight-message is #t, the
message currently selected in the message buffer is highlighted in the
summary buffer. This aids navigation in the summary buffer and is thus
the default. Set it to #f if you don't like the highlighting.
By default, the summary buffer has five columns: flags, message number,
message length, subject, and author. If imail-summary-show-date
is set to #t, a sixth column containing an abbreviated date
appears between the message number and the subject.
The width of the subject column is specified by the value of
imail-summary-subject-width; subject fields longer than this
number of characters are truncated.