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