Merge read receipt tracking work

Wino.Mail.ViewModels/ComposePageViewModel.cs

@@ -124,6 +124,9 @@ public partial class ComposePageViewModel : MailBaseViewModel,
     [ObservableProperty]
     public partial bool IsSmimeEncryptionEnabled { get; set; }
 
+    [ObservableProperty]
+    public partial bool IsReadReceiptRequested { get; set; }
+
     [ObservableProperty]
     public partial X509Certificate2 SelectedSigningCertificate { get; set; }
 
@@ -422,6 +425,7 @@ public partial class ComposePageViewModel : MailBaseViewModel,
         SaveImportance();
         SaveSubject();
         SaveFromAddress();
+        SaveReadReceiptRequest();
         SaveReplyToAddress();
 
         await SaveAttachmentsAsync();
@@ -753,6 +757,9 @@ public partial class ComposePageViewModel : MailBaseViewModel,
                 IsCCBCCVisible = true;
 
             Subject = replyingMime.Subject;
+            IsReadReceiptRequested = replyingMime.HasReadReceiptRequest();
+
+            Messenger.Send(new CreateNewComposeMailRequested(renderModel));
         });
 
         if (RenderHtmlBodyAsyncFunc != null)
@@ -818,6 +825,15 @@ public partial class ComposePageViewModel : MailBaseViewModel,
         }
     }
 
+    private void SaveReadReceiptRequest()
+    {
+        if (CurrentMimeMessage == null)
+            return;
+
+        var receiptAddress = SelectedAlias?.AliasAddress ?? ComposingAccount?.Address ?? string.Empty;
+        CurrentMimeMessage.SetReadReceiptRequest(receiptAddress, IsReadReceiptRequested);
+    }
+
     private void SaveAddressInfo(IEnumerable<AccountContact> addresses, InternetAddressList list)
     {
         list.Clear();