+\fB8h\fR, \fBtoday\fR, \fB24h\fR, \fBweek\fR, \fBmonth\fR, and
+\fByear\fR
+selects mails received during the last 8, 24, 24, 7 * 24 hours, 31 *
+24 hours, and 365 * 24 hours respectively.
+.TP
+\fByesterday\fR
+selects mails received between 48h and 24h ago.
+.TP
+\fBmonday\fR, \fBtuesday\fR, ..., \fBsunday\fR
+selects mails received the most recent such day of the week