Some threading stuff.

2025-11-01 21:46:23 +01:00
parent ae9e35e091
commit 5f9b51e4db
4 changed files with 49 additions and 9 deletions
@@ -1231,7 +1231,9 @@ public class OutlookSynchronizer : WinoSynchronizer<RequestInformation, Message,
        // Alias support is lacking with direct MIMEs.
        // Therefore we convert the MIME message to Outlook message and use proper APIs.

-        var outlookMessage = mimeMessage.AsOutlookMessage(false);
+        // Pass the ConversationId (ThreadId) to maintain threading for replies/forwards
+        var conversationId = sendDraftPreparationRequest.MailItem.ThreadId;
+        var outlookMessage = mimeMessage.AsOutlookMessage(false, conversationId);

        // Create attachment requests.
        // TODO: We need to support large file attachments with sessioned upload at some point.