Fix soem dispaly date issues.

Wino.Mail.ViewModels/MailRenderingPageViewModel.cs

@@ -452,7 +452,10 @@ public partial class MailRenderingPageViewModel : MailBaseViewModel,
             // TODO: FromName and FromAddress is probably not correct here for mail lists.
             FromAddress = message.From.Mailboxes.FirstOrDefault()?.Address ?? Translator.UnknownAddress;
             FromName = message.From.Mailboxes.FirstOrDefault()?.Name ?? Translator.UnknownSender;
-            CreationDate = message.Date.DateTime;
+            
+            // Use the received date from MailCopy if available, otherwise fall back to the sent date from MIME message
+            CreationDate = initializedMailItemViewModel?.MailCopy.CreationDate ?? message.Date.DateTime;
+            
             ContactPicture = initializedMailItemViewModel?.MailCopy.SenderContact?.Base64ContactPicture;
 
             // Automatically disable images for Junk folder to prevent pixel tracking.

Wino.Services/Extensions/MailkitClientExtensions.cs

@@ -108,10 +108,13 @@ public static class MailkitClientExtensions
         var messageUid = CreateUid(folder.Id, messageSummary.UniqueId.Id);
         var previewText = mime.GetPreviewText();
 
+        // Use InternalDate (server received date) if available, otherwise fall back to Date header (sent date)
+        var creationDate = messageSummary.InternalDate?.UtcDateTime ?? mime.Date.UtcDateTime;
+
         var copy = new MailCopy()
         {
             Id = messageUid,
-            CreationDate = mime.Date.UtcDateTime,
+            CreationDate = creationDate,
             ThreadId = messageSummary.GetThreadId(),
             MessageId = mime.GetMessageId(),
             Subject = mime.Subject,