Wino-Mail/Wino.Mail.WinUI/MainWindow.xaml

<?xml version="1.0" encoding="utf-8" ?>
<Window
    x:Class="Wino.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Frame x:Name="WindowFrame" />

</Window>