Allow longer delay to send mail.
Outlook offers a delay in sending, but it's only 10 seconds long.
That may be enough for some people, but I'd like to have the option to expand that (to the user's choice). A maximum of 5 or 10 =minutes= might be good for many people.
(Calm down, double-check a fact, be sure the correct attachment is attached, etc. etc.)
Because sometimes I hit "send" before I should have, please provide a recall feature. Users could select a 30 or 60 second delay before before the email takes off. And then during the delay, be able to go into the sent delayed file and read the email. That way you could see if you need to hit recall.