This is a good tip. I've used this to type out angry emails to coworkers or bosses and after I vented, I can delete it and type a professional email after.

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If you have the recipient's email at hand before you start and don't want to look for it later, put it in the cc: line and leave the main recipient blank. You can drag it into place once you're done writing.

I do this when I have to consult multiple documents before sending a summary.

My settings have a 5 second delay for me to pull back any oops email.

This "pro tip" shows up here every week

I’ll do you one better, I actually type out the entire email in a word document first, make all my corrections and edits there, then just copy and paste the whole thing and send it off. Just a little added security when you’re typing up sensitive emails where it’s imperative every detail is perfect.