[f233f2]

It's like that because mobile clients need cooperation from the server to have push notifications, and you can't have IMAP servers cooperate in that regard :-) so the outlook servers fetch the mail for you and then send you the notifications.

I wouldn't have microsoft read my email either, of course. Thankfully in windows you have dozens of clients to choose from.

[nerdjon]

So you poll instead of getting a push?

Thats what my phone does. I could have seen the value of this 10-15 years ago but I don’t see the point now.

It isn’t like this would magically get rid of the delay either, their servers still have to poll before they can send you that notification.

[f233f2]

You can't realiably poll from a mobile phone. Your app may not be allowed to execute any code, let alone make a network request for hours, or maybe forever.