HI Doug,
When your email is in draft mode, you want to click on the name of it to go into the edit screen. Once there, you will see the current name of the email up in the top left under "Customize Your Email". To the left of where it says "Draft", you can see a little pencil icon. Just click anywhere on the name of your email and it will open up so you can edit the name.
I hope that helps!
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