Create email with multiple recipients from listbox values - vba

Question

I am trying to create an email and populate multiple recipients based off a listbox.
I tried putting the list box column reference in the ".To" line but it gives a null error.
I found code that should loop through the listbox values but it is not populating any recipients.
Public Sub cmdEmailContact_Click()
Dim appOutLook As Outlook.Application
Dim MailOutLook As Outlook.MailItem
Dim strPath As String
Dim strFilter As String
Dim strFile As String
Dim strFileEnd As String
Dim strEmailRecipients As String
strPath = "C:\Users\username\Desktop\Invoice Test\GCX"
strFilter = Me.txtInvNum
strFileEnd = ".pdf"
strFile = Dir(strPath & strFilter & strFileEnd)
strEmailRecipients = ""
For N = 0 To Me.lstContacts.ListCount - 1
If Me.lstContacts.Selected(N) = True Then
strEmailRecipients = strEmailRecipients & "; " & Me.lstContacts.Column(3, N)
End If
Next N
strEmailRecipients = Mid(strEmailRecipients, 3)
If strFile <> "" Then
Set appOutLook = CreateObject("Outlook.Application")
Set MailOutLook = appOutLook.CreateItem(olMailItem)
With MailOutLook
.BodyFormat = olFormatRichText
.To = strEmailRecipients
''.cc = ""
''.bcc = ""
.Subject = "text here"
.SentOnBehalfOfName = "emailname"
.HTMLBody = "text here"
.Attachments.Add (strPath & strFilter & strFileEnd)
'.Send
.Display
End With
Else
MsgBox "No file matching " & strPath & strFilter & strFileEnd & " found." & vbCrLf & _
"Process has been stopped."
Exit Sub
End If
End Sub
I expect strEmailRecipients to equal a semi-colon separated list of email addresses based off the listbox. There are no error messages.

Answer 1

Rather than building a semi-colon delimited string to populate the To property of the MailItem object, you may instead want to modify the contents of the Recipients collection when adding recipients (independent of the recipient type) to a MailItem object.
Adding an item to the Recipients collection using the Add method will yield a Recipient object, which has a Type property which may be used to designate the recipient as either to, cc, or bcc by setting the property to olTo, olCC, or olBCC (or 1, 2, or 3 if using late binding).
Hence the construction of the email might become something along the lines of the following:
Dim idx
With MailOutLook
With .Recipients
For Each idx In lstContacts.ItemsSelected
With .Add(lstContacts.ItemData(idx))
.Type = olTo
End With
Next idx
End With
.BodyFormat = olFormatRichText
' ... etc.
End With