VBA - Message Input Box Before Sent Disappeared

Hi,

I'm new to VBA and I've tried to create code that before sending an e-mail with an attachment, a message box appears asking if the attachment has been checked before sending.

This worked on the day it was implemented, but after restarting my PC, the code is still visible in ThisOutlookSession but does not run.

Is there something I need to do in order for this to run each day?

I also want to advance this to only run this if the attachment/s are specific attachment types, not sure if this is possible or not.

Any help is appreciated.



Code below:

Code:

---

'ThisOutlookSession
Option Explicit
Private Sub Application_ItemSend(ByVal Item As Object, Cancel As Boolean)
  Dim msg As String
  Dim att As Outlook.Attachment
   
  If TypeOf Item Is Outlook.MailItem Then
    If Item.Attachments.Count > 0 Then
      msg = "Have you double checked the attachment/s to ensure that the data is relevant?." & vbNewLine & _
            "If no, please press the No button and re-check." & vbNewLine
      For Each att In Item.Attachments
        msg = msg & vbNewLine & "* " & att.FileName
      Next
      If MsgBox(msg, vbQuestion + vbSystemModal + vbYesNo) = vbNo Then Cancel = True
    End If
  End If
End Sub

---

Have you used debugging to see if the code is running but the If is failing?

VBA: How to Debug Code - Overview, Tools, Shortcut Keys (corporatefinanceinstitute.com)

Just guessing here, so test before you intend to use in your outlook program

Code:

---

Sub SendMail()
    Dim OutlookApp As Outlook.Application
    Dim OutlookMail As Outlook.MailItem
    Set OutlookApp = New Outlook.Application
    Set OutlookMail = OutlookApp.CreateItem(olMailItem)
    With OutlookMail
        .To = "address@domain.com"
        .CC = ""
        .BCC = ""
        .Subject = "File for your perusal"
        .BodyFormat = olFormatHTML
        .HTMLBody = "Hi, <p> I'm sending this message from Excel using VBA.</p>Please _
        find file attached."
        .Attachments.Add ActiveWorkbook.FullName
        .Importance = olImportanceHigh
        .ReadReceiptRequested = True
        If .Attachments.Count >0 then
            If Msgbox” Is the attachment relevant to the person receiving this email?, + vbYesNo + vbQuestion, “Test for Validity”) = Yes Then
              .Send
            Else
                Exit sub
          End if
      End if
End With
Set OutlookMail = Nothing
Set OutlookApp = Nothing
End Sub

---

Thank you both for your replies, it's appreciated!

It's strange because it seems to be working without any issues today, so not quite sure why yesterday was different. I'll monitor it and I'll take the advice given if it is inconsistent with when it works.

Thank you!