如何使用mailkit在listview项目中设置被视为邮件的标志？

<ListView>
    <ListView.ItemTemplate>
        <DataTemplate>
            <Grid>
                <!-- 其他项的内容 -->
                <Image Source="mail_icon.png" Width="16" Height="16">
                    <Image.Style>
                        <Style TargetType="Image">
                            <Setter Property="Visibility" Value="Collapsed"/>
                            <Style.Triggers>
                                <DataTrigger Binding="{Binding IsEmail}" Value="True">
                                    <Setter Property="Visibility" Value="Visible"/>
                                </DataTrigger>
                            </Style.Triggers>
                        </Style>
                    </Image.Style>
                </Image>
            </Grid>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>