if you mean one of the mails is open in a "window", probably at the bottom of the screen, that suggests you have preview pane enabled; dangerous practice. Worth checking anyway. In Windows Mail go to View> layout> and untick "Show Preview pane" . Then click Apply & then OK. I agree with brundle about Mailwasher - very useful software; it's free and you can train it to recognise and remove stuff you don't want without it ever needing to appear in your Inbox
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