$smsg->{dt} = iso8601(delete $smsg->{ds}); # JMAP UTCDate
$smsg->{pct} = get_pct($mitem) if $mitem;
if (my $r = delete $smsg->{references}) {
$smsg->{dt} = iso8601(delete $smsg->{ds}); # JMAP UTCDate
$smsg->{pct} = get_pct($mitem) if $mitem;
if (my $r = delete $smsg->{references}) {