Many of those features are basic UI ones, not really email specific. Anyway, Outlook's entire selling point is offering everything a mail client could. If all y

Many of those features are basic UI ones, not really email specific. Anyway, Outlook's entire selling point is offering everything a mail client could. If all you care about is reading emails there was never really a good reason to use such a heavy desktop client. For many others that heavy desktop client was the entire point of having Outlook.