VBA Search in Outlook

Here is a way to do the search using Items Restrict.

This runs fast and you do not need to loop through the items to find the items that match the search criteria.

Sub Search_Inbox()

Dim myOlApp As New Outlook.Application
Dim objNamespace As Outlook.NameSpace
Dim objFolder As Outlook.MAPIFolder
Dim filteredItems As Outlook.Items
Dim itm As Object
Dim Found As Boolean
Dim strFilter As String


Set objNamespace = myOlApp.GetNamespace("MAPI")
Set objFolder = objNamespace.GetDefaultFolder(olFolderInbox)

strFilter = "@SQL=" & Chr(34) & "urn:schemas:httpmail:subject" & Chr(34) & " like '%sketch%'"

Set filteredItems = objFolder.Items.Restrict(strFilter)

If filteredItems.Count = 0 Then
    Debug.Print "No emails found"
    Found = False
Else
    Found = True
    ' this loop is optional, it displays the list of emails by subject.
    For Each itm In filteredItems
     Debug.Print itm.Subject
    Next
End If


'If the subject isn't found:
If Not Found Then
    'NoResults.Show
Else
   Debug.Print "Found " & filteredItems.Count & " items."

End If

'myOlApp.Quit
Set myOlApp = Nothing

End Sub

The reason your .Find isn't working is because Items.Find doesn't support the use of wildcards. Items.Find also doesn't support searching partial strings. So to actually find the email, you'd need to remove the wildcards and include the entire string in your search criteria.

So here are your options:

If you know the full subject line you're looking for, modify your code like so:

Set Mail = olItms.Find("[Subject] = ""This Sketch Email""")

If you don't (or won't) know the full subject, you can loop through your inbox folder and search for a partial subject line like so:

Untested

Sub Search_Inbox()

Dim myOlApp As New Outlook.Application
Dim myNameSpace As Outlook.NameSpace
Dim myInbox As Outlook.MAPIFolder
Dim myitems As Outlook.Items
Dim myitem As Object
Dim Found As Boolean

Set myNameSpace = myOlApp.GetNamespace("MAPI")
Set myInbox = myNameSpace.GetDefaultFolder(olFolderInbox)
Set myitems = myInbox.Items
Found = False

For Each myitem In myitems
    If myitem.Class = olMail Then
        If InStr(1, myitem.Subject, "sketch") > 0 Then
            Debug.Print "Found"
            Found = True
        End If
    End If
Next myitem

'If the subject isn't found:
If Not Found Then
    NoResults.Show
End If

myOlApp.Quit
Set myOlApp = Nothing

End Sub

Hope that helps!