We are testing with aspose.email 24.9 (Files attached)
TestPSTandEML.zip (23.2 KB)
using Aspose.Email;
using Aspose.Email.Mapi;
using Aspose.Email.Storage.Pst;
var asposeLicense = new License();
var pstFilePath = a…...UpdateMessage(ids[0], msg); // now you try to update a non‑existent entry inbox[1]...original message before you try to update it. UpdateMessage then works...