Finally I got it worked, wanted to share so that others don't waste time in looking for solution.
Code:
'delete email
Browser("name:=.*").page("Title:=.*").webelement("height:=29","index:=45").Highlight 'I had to find out the index and it was hit and trial to get the index number
Browser("name:=.*").page("Title:=.*").webelement("height:=29","index:=45").click
Set WShell = CreateObject("WScript.Shell")
WShell.AppActivate "Browser"
WShell.sendkeys("{ENTER}")
Set WShell = Nothing