The asynchronous nature of email is useful. If I get a chat message in slack or teams, I generally assume a response is needed immediately. If I get a notificat

The asynchronous nature of email is useful. If I get a chat message in slack or teams, I generally assume a response is needed immediately. If I get a notification, I'll drop what I'm working on, and respond to their question. With email, there's no expectation of that, at least not at my company. If you send an email, you expect a response sometime between the next few hours and the next few days. The only notification is a flag on my email client, which is easily ignored until I'm at a stopping point and can dedicate time to the question.