The command
+.P
.nf
.B mymail --db-file /tmp/mymail/2010-2011/mymail.db \e
-.B --index \e
-.B ~/archives/mails/2010 ~/archives/mails/2011
+.B \ \ \ \ \ \ \ --index \e
+.B \ \ \ \ \ \ \ ~/archives/mails/2010 ~/archives/mails/2011
+.fi
will index all the mbox files present in the directories
~/archives/mails/2010 and ~/archives/mails/2011 (recursively) and
create an index file /tmp/mymail/2010-2011/mymail.db
And
+.P
.nf
.B mymail --db-pattern '\.db$' --db-root /tmp/mymail \e
-.B --output /tmp/mymail.mbox \e
-.B --search 'p bob.something' \e
-.B --search '!s spam' \e
-.B --search 'month'
+.B \ \ \ \ \ \ \ --output /tmp/mymail.mbox \e
+.B \ \ \ \ \ \ \ --search 'p bob.something' \e
+.B \ \ \ \ \ \ \ --search '!s spam' \e
+.B \ \ \ \ \ \ \ --search 'month'
+.fi
will search in all the database files *.db located (recursively) in
/tmp/mymail, for all the mails having "bob.something" as sender or
recipient, without "spam" in the subject, received over the last 31