你不能使用VBA添加上下文菜单。

你需要创建COM Addin。这是一个想法：如何添加上下文菜单按钮 [ ^ ]



更多信息，请参阅：在Outlook 2010中扩展用户界面 [ ^ ]

I have a macro to do some task is that transfer the opened mailitem to specific folder in my hard drive.That code is like:

Public Sub export1()
Const OLTXT = 0
  Dim currentExplorer As Explorer
  Dim Selection As Selection
  Dim oMail As Outlook.MailItem
  Dim obj As Object
  Dim sPath As String
  Dim dtDate As Date
  Dim sName As String


  Set currentExplorer = Application.ActiveExplorer
    Set Selection = currentExplorer.Selection

 For Each obj In Selection
  Set oMail = obj
  sName = oMail.Subject
  ReplaceCharsForFileName sName, "_"

  dtDate = oMail.ReceivedTime
  sName = Format(dtDate, "yyyymmdd", vbUseSystemDayOfWeek, _
    vbUseSystem) & Format(dtDate, "-hhnnss", _
    vbUseSystemDayOfWeek, vbUseSystem) & "-" & sName & ".html"

  oMail.SaveAs "D:\macro\" & sName, OLTXT

  Next

Module2.SaveAttachments

End Sub

Private Sub ReplaceCharsForFileName(sName As String, _
  sChr As String _
)
  sName = Replace(sName, "/", sChr)
  sName = Replace(sName, "\", sChr)
  sName = Replace(sName, ":", sChr)
  sName = Replace(sName, "?", sChr)
  sName = Replace(sName, Chr(34), sChr)
  sName = Replace(sName, "<", sChr)
  sName = Replace(sName, ">", sChr)
  sName = Replace(sName, "|", sChr)
End Sub

This code is belongs to save mail attachments:-

Public Sub SaveAttachments()
Dim objOL As Outlook.Application
Dim objMsg As Outlook.MailItem 'Object
Dim objAttachments As Outlook.Attachments
Dim objSelection As Outlook.Selection
Dim i As Long
Dim lngCount As Long
Dim strFile As String
Dim strFolderpath As String
Dim strDeletedFiles As String

    ' Get the path to your My Documents folder
    strFolderpath = CreateObject("WScript.Shell").SpecialFolders(16)
    On Error Resume Next

    ' Instantiate an Outlook Application object.
    Set objOL = CreateObject("Outlook.Application")

    ' Get the collection of selected objects.
    Set objSelection = objOL.ActiveExplorer.Selection

' The attachment folder needs to exist
' You can change this to another folder name of your choice

    ' Set the Attachment folder.
    strFolderpath = "D:\macro\"

    ' Check each selected item for attachments.
    For Each objMsg In objSelection

    Set objAttachments = objMsg.Attachments
    lngCount = objAttachments.Count

    If lngCount > 0 Then

    ' Use a count down loop for removing items
    ' from a collection. Otherwise, the loop counter gets
    ' confused and only every other item is removed.

    For i = lngCount To 1 Step -1

    ' Get the file name.
    strFile = objAttachments.Item(i).FileName

    ' Combine with the path to the Temp folder.
    strFile = strFolderpath & strFile

    ' Save the attachment as a file.
    objAttachments.Item(i).SaveAsFile strFile

    Next i
    MsgBox "saved in D:\macro with attachments"
    Else
    MsgBox "mail is saved and no attachments for this selection mail"
    End If

    Next

ExitSub:

Set objAttachments = Nothing
Set objMsg = Nothing
Set objSelection = Nothing
Set objOL = Nothing

End Sub

Now i want to add specific name to when i right click on mailitem after selecting the name this code has to execute.for doing this what i need to do please help me to find a solution.

You can't add context menu using VBA.
You need to create COM Addin. Here is an idea: How to add context menu buttons[^]

For further information, please see: Extending the User Interface in Outlook 2010[^]