mum.ms: Add section about sent messages

1 files changed, 20 insertions, 0 deletions

diff --git a/doc/mum.ms b/doc/mum.ms
index 78acf58..df0eeed 100644
--- a/doc/mum.ms
+++ b/doc/mum.ms
@@ -145,3 +145,23 @@ On the author's system, this script takes circa 0.07 seconds to
 filter through an mbox index with 2000 messages (or, in other words,
 slightly less than the average time it takes for the Python interpreter
 just to start).
+.SH \" -----------------------------------------------------------------
+Sent messages
+.LP
+Mum takes a novel approach to the storage of sent e-mail.
+Traditionally, sent messages are either discarded or saved in a
+separate folder or file.
+Mum, however, opts to save sent messages in the same mbox as received
+messages.
+There are many benefits to this approach:
+.IP \h'2n'1.
+E-mail is easier to back up and copy across systems.
+.IP \h'2n'2.
+It is trivial for mum to show entire message threads, including the
+user's own replies.
+.IP \h'2n'3.
+Considering mum's lack of folders, it makes sense to keep sent mail
+in the same file as all other mail.
+.LP
+In summary, keeping all mail in a single file is conceptually simpler
+than any alternative and has a number of practical benefits.