A common mistake most people have made at some point is sending an email with a key flaw that makes us wish we could take it back. With macOS Ventura, you can easily unsend emails in the Mail app. However, you can only accomplish this within 10 seconds of hitting send.
How to unsend an email
Open Mail, make sure you can see the left sidebar - if not, click View in the menu bar and select Show Sidebar
Send an email
On the bottom left of the sidebar, click Undo Send within 10 seconds