gconftool-2 --get /apps/evolution/mail/display/mark_seen_timeout
Setzen der Verzögerung in Millisekunden:
gconftool-2 --set /apps/evolution/mail/display/mark_seen_timeout --type int 1500
[[http://askubuntu.com/questions/99847/automatically-mark-emails-as-read-in-evolution-3-2-2|cf.]]