如何在 Outlook 中回覆或轉寄郵件時保留類別？

Author: Xiaoyang Last Modified: 2025-08-06

通常，當您回覆或轉寄已分類的郵件時，已傳送郵件中的類別會自動刪除。若您希望在回覆或轉寄時保留外寄郵件的類別，本文將介紹一種處理方法。

使用 VBA 程式碼在回覆或轉寄郵件時保留類別

1. 按住 ALT + F11 鍵以開啟 Microsoft Visual Basic for Applications 視窗。

2. 在 Microsoft Visual Basic for Applications 視窗中，於 Project1(VbaProject.OTM) 窗格中雙擊 ThisOutlookSession 以打開模組，然後複製並將以下程式碼貼到空白模組中。

VBA 程式碼：在回覆或轉寄郵件時保留類別：

Private WithEvents GExplorer As Outlook.Explorer
Private WithEvents GInspectors As Outlook.Inspectors
Private WithEvents GMailItem As Outlook.MailItem
Private GCategories As String
Private Sub Application_Startup()
    Dim xApp As Outlook.Application
    Set xApp = Outlook.Application
    Set GExplorer = xApp.ActiveExplorer
    Set GInspectors = xApp.Inspectors
End Sub
Private Sub GExplorer_SelectionChange()
    On Error Resume Next
    If TypeName(GExplorer.Selection.Item(1)) <> "MailItem" Then Exit Sub
    Set GMailItem = GExplorer.Selection.Item(1)
    GCategories = GMailItem.Categories
End Sub
Private Sub GInspectors_NewInspector(ByVal Inspector As Inspector)
    On Error Resume Next
    If TypeName(Inspector.CurrentItem) <> "MailItem" Then Exit Sub
   Set GMailItem = Inspector.CurrentItem
    GCategories = GMailItem.Categories
End Sub
Private Sub GMailItem_Forward(ByVal Forward As Object, Cancel As Boolean)
    Call GetCategories(Forward)
End Sub
Private Sub GMailItem_Reply(ByVal Response As Object, Cancel As Boolean)
    Call GetCategories(Response)
End Sub
Private Sub GMailItem_ReplyAll(ByVal Response As Object, Cancel As Boolean)
    Call GetCategories(Response)
End Sub
Private Sub GetCategories(ByVal NewMail As Object)
    If NewMail.Class <> olMail Then Exit Sub
    NewMail.Categories = GCategories
End Sub