When you send an email through GMail, there's a 5-10 second popup with an "Undo?" button that will allow you to prevent the email from being sent, and edit it again. I assume they're just putting a delay on sending the email (since the Email spec doesn't have the ability to revoke sent emails, as far as I'm aware).

It would be really nice if ClickUp could do the same thing. Just put a short timer on sending the email to the email server, and allow us to halt that if we notice a typo at the last moment, etc.