\fByesterday\fR selects mails received between 48h and 24h ago.
.TP
\fBmonday\fR, \fBtuesday\fR, ..., \fBsunday\fR selects mails received
\fByesterday\fR selects mails received between 48h and 24h ago.
.TP
\fBmonday\fR, \fBtuesday\fR, ..., \fBsunday\fR selects mails received